diff --git a/app/src/main/java/kr/co/vividnext/sodalive/live/room/update/LiveRoomEditActivity.kt b/app/src/main/java/kr/co/vividnext/sodalive/live/room/update/LiveRoomEditActivity.kt
index 39f003f7..7d8be4c1 100644
--- a/app/src/main/java/kr/co/vividnext/sodalive/live/room/update/LiveRoomEditActivity.kt
+++ b/app/src/main/java/kr/co/vividnext/sodalive/live/room/update/LiveRoomEditActivity.kt
@@ -64,7 +64,11 @@ class LiveRoomEditActivity : BaseActivity<ActivityLiveRoomEditBinding>(
         super.onCreate(savedInstanceState)
 
         if (roomDetail == null) {
-            Toast.makeText(applicationContext, "잘못된 요청입니다.", Toast.LENGTH_LONG).show()
+            Toast.makeText(
+                applicationContext,
+                getString(R.string.msg_live_room_edit_invalid_request),
+                Toast.LENGTH_LONG
+            ).show()
             finish()
         }
 
@@ -73,13 +77,17 @@ class LiveRoomEditActivity : BaseActivity<ActivityLiveRoomEditBinding>(
         binding.etContent.setText(roomDetail.notice)
         binding.etNumberOfPeople.setText(roomDetail.numberOfParticipantsTotal.toString())
         viewModel.setRoomDetail(roomDetail = roomDetail)
+        binding.tvNumberOfCharacters.text = getString(
+            R.string.screen_live_room_create_notice_char_count_format,
+            binding.etContent.length()
+        )
     }
 
     @SuppressLint("ClickableViewAccessibility")
     override fun setupView() {
         loadingDialog = LoadingDialog(this, layoutInflater)
 
-        binding.toolbar.tvBack.text = "라이브 수정"
+        binding.toolbar.tvBack.setText(R.string.screen_live_room_profile_edit_title)
         binding.toolbar.tvBack.setOnClickListener { finish() }
 
         binding.tvReservationDate.setOnClickListener {
@@ -164,7 +172,6 @@ class LiveRoomEditActivity : BaseActivity<ActivityLiveRoomEditBinding>(
         }
     }
 
-    @SuppressLint("SetTextI18n")
     private fun bindData() {
         compositeDisposable.add(
             binding.etTitle.textChanges().skip(1)
@@ -180,7 +187,10 @@ class LiveRoomEditActivity : BaseActivity<ActivityLiveRoomEditBinding>(
                 .subscribeOn(Schedulers.io())
                 .observeOn(AndroidSchedulers.mainThread())
                 .subscribe {
-                    binding.tvNumberOfCharacters.text = "${it.length}자"
+                    binding.tvNumberOfCharacters.text = getString(
+                        R.string.screen_live_room_create_notice_char_count_format,
+                        it.length
+                    )
                     viewModel.content = it.toString()
                 }
         )
@@ -198,8 +208,14 @@ class LiveRoomEditActivity : BaseActivity<ActivityLiveRoomEditBinding>(
                 }
         )
 
-        viewModel.toastLiveData.observe(this) {
-            it?.let { Toast.makeText(applicationContext, it, Toast.LENGTH_LONG).show() }
+        viewModel.toastLiveData.observe(this) { uiText ->
+            uiText?.let {
+                Toast.makeText(
+                    applicationContext,
+                    it.asString(this),
+                    Toast.LENGTH_LONG
+                ).show()
+            }
         }
 
         viewModel.isLoading.observe(this) {
diff --git a/app/src/main/java/kr/co/vividnext/sodalive/live/room/update/LiveRoomEditViewModel.kt b/app/src/main/java/kr/co/vividnext/sodalive/live/room/update/LiveRoomEditViewModel.kt
index 78697e1f..c983f89b 100644
--- a/app/src/main/java/kr/co/vividnext/sodalive/live/room/update/LiveRoomEditViewModel.kt
+++ b/app/src/main/java/kr/co/vividnext/sodalive/live/room/update/LiveRoomEditViewModel.kt
@@ -7,10 +7,14 @@ import com.orhanobut.logger.Logger
 import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers
 import io.reactivex.rxjava3.schedulers.Schedulers
 import kr.co.vividnext.sodalive.base.BaseViewModel
+import kr.co.vividnext.sodalive.common.UiText
+import kr.co.vividnext.sodalive.common.UiText.DynamicString
+import kr.co.vividnext.sodalive.common.UiText.StringResource
 import kr.co.vividnext.sodalive.common.SharedPreferenceManager
 import kr.co.vividnext.sodalive.extensions.convertDateFormat
 import kr.co.vividnext.sodalive.live.LiveRepository
 import kr.co.vividnext.sodalive.live.room.detail.GetRoomDetailResponse
+import kr.co.vividnext.sodalive.R
 import okhttp3.MediaType.Companion.toMediaType
 import okhttp3.RequestBody.Companion.toRequestBody
 import java.util.Locale
@@ -20,16 +24,16 @@ class LiveRoomEditViewModel(
     private val repository: LiveRepository
 ) : BaseViewModel() {
 
-    private val _reservationDateLiveData = MutableLiveData("날짜를 선택해주세요")
+    private val _reservationDateLiveData = MutableLiveData("")
     val reservationDateLiveData: LiveData<String>
         get() = _reservationDateLiveData
 
-    private val _reservationTimeLiveData = MutableLiveData("시간을 설정해주세요")
+    private val _reservationTimeLiveData = MutableLiveData("")
     val reservationTimeLiveData: LiveData<String>
         get() = _reservationTimeLiveData
 
-    private val _toastLiveData = MutableLiveData<String?>()
-    val toastLiveData: LiveData<String?>
+    private val _toastLiveData = MutableLiveData<UiText?>()
+    val toastLiveData: LiveData<UiText?>
         get() = _toastLiveData
 
     private var _isLoading = MutableLiveData(false)
@@ -86,7 +90,7 @@ class LiveRoomEditViewModel(
                 request.numberOfPeople == null &&
                 request.beginDateTimeString == null
             ) {
-                _toastLiveData.value = "변경사항이 없습니다."
+                _toastLiveData.value = StringResource(R.string.msg_live_room_edit_no_changes)
                 _isLoading.value = false
                 return
             }
@@ -104,14 +108,15 @@ class LiveRoomEditViewModel(
                     .subscribe(
                         {
                             if (it.success && it.data != null) {
-                                _toastLiveData.value = "라이브 정보가 수정 되었습니다."
+                                _toastLiveData.value =
+                                    StringResource(R.string.screen_live_room_info_updated)
                                 onSuccess()
                             } else {
                                 if (it.message != null) {
-                                    _toastLiveData.postValue(it.message)
+                                    _toastLiveData.postValue(DynamicString(it.message))
                                 } else {
                                     _toastLiveData.postValue(
-                                        "라이브 정보를 수정 하지 못했습니다.\n다시 시도해 주세요."
+                                        StringResource(R.string.msg_live_room_edit_update_failed)
                                     )
                                 }
                             }
@@ -121,7 +126,7 @@ class LiveRoomEditViewModel(
                             _isLoading.postValue(false)
                             it.message?.let { message -> Logger.e(message) }
                             _toastLiveData.postValue(
-                                "라이브 정보를 수정 하지 못했습니다.\n다시 시도해 주세요."
+                                StringResource(R.string.msg_live_room_edit_update_failed)
                             )
                         }
                     )
@@ -161,17 +166,23 @@ class LiveRoomEditViewModel(
 
     private fun validateData(): Boolean {
         if (title.isBlank()) {
-            _toastLiveData.postValue("제목을 입력해주세요.")
+            _toastLiveData.postValue(
+                StringResource(R.string.msg_live_room_create_title_required)
+            )
             return false
         }
 
         if (content.isBlank() || content.length < 5) {
-            _toastLiveData.postValue("내용을 5자 이상 입력해주세요.")
+            _toastLiveData.postValue(
+                StringResource(R.string.msg_live_room_create_notice_required)
+            )
             return false
         }
 
-        if (numberOfPeople < 3 || numberOfPeople > 999) {
-            _toastLiveData.postValue("인원을 3~999명 사이로 입력해주세요.")
+        if (numberOfPeople !in 3..999) {
+            _toastLiveData.postValue(
+                StringResource(R.string.msg_live_room_create_participants_invalid)
+            )
             return false
         }
 
diff --git a/app/src/main/res/layout/activity_live_room_edit.xml b/app/src/main/res/layout/activity_live_room_edit.xml
index e066c67c..a0a06ace 100644
--- a/app/src/main/res/layout/activity_live_room_edit.xml
+++ b/app/src/main/res/layout/activity_live_room_edit.xml
@@ -35,7 +35,7 @@
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
                     android:fontFamily="@font/gmarket_sans_bold"
-                    android:text="제목"
+                    android:text="@string/screen_live_room_title_label"
                     android:textColor="@color/color_eeeeee"
                     android:textSize="16.7sp" />
 
@@ -45,7 +45,7 @@
                     android:layout_height="wrap_content"
                     android:background="@drawable/edittext_underline"
                     android:fontFamily="@font/gmarket_sans_medium"
-                    android:hint="라이브 제목을 입력해주세요."
+                    android:hint="@string/screen_live_room_title_hint"
                     android:importantForAutofill="no"
                     android:inputType="textWebEditText"
                     android:paddingHorizontal="6.7dp"
@@ -75,7 +75,7 @@
                         android:layout_centerVertical="true"
                         android:fontFamily="@font/gmarket_sans_bold"
                         android:lineSpacingExtra="5sp"
-                        android:text="공지"
+                        android:text="@string/screen_live_room_notice"
                         android:textColor="@color/color_eeeeee"
                         android:textSize="16.7sp" />
 
@@ -89,7 +89,7 @@
                             android:layout_width="wrap_content"
                             android:layout_height="wrap_content"
                             android:fontFamily="@font/gmarket_sans_medium"
-                            android:text="0자"
+                            android:text="@string/screen_live_room_create_notice_char_count_placeholder"
                             android:textColor="@color/color_ff5c49"
                             android:textSize="13.3sp" />
 
@@ -97,7 +97,7 @@
                             android:layout_width="wrap_content"
                             android:layout_height="wrap_content"
                             android:fontFamily="@font/gmarket_sans_medium"
-                            android:text=" / 최대 1000자"
+                            android:text="@string/screen_live_room_create_notice_char_limit"
                             android:textColor="@color/color_777777"
                             android:textSize="13.3sp" />
                     </LinearLayout>
@@ -110,7 +110,7 @@
                     android:background="@drawable/bg_round_corner_6_7_222222"
                     android:fontFamily="@font/gmarket_sans_medium"
                     android:gravity="top"
-                    android:hint="라이브 공지를 입력해 주세요"
+                    android:hint="@string/screen_live_room_notice_hint"
                     android:importantForAutofill="no"
                     android:inputType="textMultiLine"
                     android:overScrollMode="always"
@@ -132,7 +132,7 @@
                 android:layout_marginTop="33.3dp"
                 android:fontFamily="@font/gmarket_sans_bold"
                 android:lineSpacingExtra="5sp"
-                android:text="시간 설정"
+                android:text="@string/screen_live_room_create_time_label"
                 android:textColor="@color/color_eeeeee"
                 android:textSize="16.7sp" />
 
@@ -152,12 +152,12 @@
                     android:orientation="vertical">
 
                     <TextView
-                        android:layout_width="match_parent"
-                        android:layout_height="wrap_content"
-                        android:fontFamily="@font/gmarket_sans_medium"
-                        android:text="예약 날짜"
-                        android:textColor="@color/color_eeeeee"
-                        android:textSize="13.3sp" />
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:fontFamily="@font/gmarket_sans_medium"
+                    android:text="@string/screen_live_room_create_reservation_date_label"
+                    android:textColor="@color/color_eeeeee"
+                    android:textSize="13.3sp" />
 
                     <TextView
                         android:id="@+id/tv_reservation_date"
@@ -168,6 +168,7 @@
                         android:fontFamily="@font/gmarket_sans_medium"
                         android:gravity="center"
                         android:paddingVertical="15.3dp"
+                        android:text="@string/screen_live_room_create_reservation_date_placeholder"
                         android:textColor="@color/color_eeeeee"
                         android:textSize="14.7sp"
                         tools:text="2021.08.04" />
@@ -182,12 +183,12 @@
                     android:orientation="vertical">
 
                     <TextView
-                        android:layout_width="match_parent"
-                        android:layout_height="wrap_content"
-                        android:fontFamily="@font/gmarket_sans_medium"
-                        android:text="예약 시간"
-                        android:textColor="@color/color_eeeeee"
-                        android:textSize="13.3sp" />
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:fontFamily="@font/gmarket_sans_medium"
+                    android:text="@string/screen_live_room_create_reservation_time_label"
+                    android:textColor="@color/color_eeeeee"
+                    android:textSize="13.3sp" />
 
                     <TextView
                         android:id="@+id/tv_reservation_time"
@@ -198,6 +199,7 @@
                         android:fontFamily="@font/gmarket_sans_medium"
                         android:gravity="center"
                         android:paddingVertical="15.3dp"
+                        android:text="@string/screen_live_room_create_reservation_time_placeholder"
                         android:textColor="@color/color_eeeeee"
                         android:textSize="14.7sp"
                         tools:text="오후 08 : 30" />
@@ -211,7 +213,7 @@
                 android:layout_marginTop="33.3dp"
                 android:fontFamily="@font/gmarket_sans_bold"
                 android:lineSpacingExtra="5sp"
-                android:text="참여인원 설정"
+                android:text="@string/screen_live_room_create_capacity_label"
                 android:textColor="@color/color_eeeeee"
                 android:textSize="16.7sp" />
 
@@ -223,7 +225,7 @@
                 android:background="@drawable/bg_round_corner_6_7_222222"
                 android:fontFamily="@font/gmarket_sans_medium"
                 android:gravity="center"
-                android:hint="최대 인원 999명"
+                android:hint="@string/screen_live_room_create_capacity_hint"
                 android:importantForAutofill="no"
                 android:inputType="number"
                 android:maxLength="3"
@@ -253,7 +255,7 @@
             android:background="@drawable/bg_round_corner_10_3bb9f1"
             android:fontFamily="@font/gmarket_sans_bold"
             android:gravity="center"
-            android:text="라이브 수정"
+            android:text="@string/screen_live_room_profile_edit_title"
             android:textColor="@color/white"
             android:textSize="18.3sp" />
     </FrameLayout>
diff --git a/app/src/main/res/values-en/strings.xml b/app/src/main/res/values-en/strings.xml
index 4f13cbbe..45c113c8 100644
--- a/app/src/main/res/values-en/strings.xml
+++ b/app/src/main/res/values-en/strings.xml
@@ -483,6 +483,10 @@
     <string name="screen_live_room_menu_first_required">Set menu 1 first.</string>
     <string name="screen_live_room_menu_first_second_required">Set menu 1 and menu 2 first.</string>
     <string name="screen_live_room_cancel_reason_required">Please enter a cancellation reason.</string>
+    <!-- Live Room Edit -->
+    <string name="msg_live_room_edit_invalid_request">Invalid request.</string>
+    <string name="msg_live_room_edit_no_changes">No changes to update.</string>
+    <string name="msg_live_room_edit_update_failed">Could not update the live info.\nPlease try again.</string>
     <!-- Live Room Create -->
     <string name="screen_live_room_create_title">Create live</string>
     <string name="screen_live_room_create_get_recent_info">Load recent data</string>
diff --git a/app/src/main/res/values-ja/strings.xml b/app/src/main/res/values-ja/strings.xml
index 5d0a65cc..85821f4e 100644
--- a/app/src/main/res/values-ja/strings.xml
+++ b/app/src/main/res/values-ja/strings.xml
@@ -483,6 +483,10 @@
     <string name="screen_live_room_menu_first_required">メニュー1を先に設定してください</string>
     <string name="screen_live_room_menu_first_second_required">メニュー1とメニュー2を先に設定してください</string>
     <string name="screen_live_room_cancel_reason_required">キャンセル理由を入力してください。</string>
+    <!-- Live Room Edit -->
+    <string name="msg_live_room_edit_invalid_request">不正なリクエストです。</string>
+    <string name="msg_live_room_edit_no_changes">変更内容がありません。</string>
+    <string name="msg_live_room_edit_update_failed">ライブ情報を修正できませんでした。\nもう一度お試しください。</string>
     <!-- Live Room Create -->
     <string name="screen_live_room_create_title">ライブを作成</string>
     <string name="screen_live_room_create_get_recent_info">最近のデータを読み込む</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 2f0befd5..aa778765 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -482,6 +482,10 @@
     <string name="screen_live_room_menu_first_required">메뉴 1을 먼저 설정하세요</string>
     <string name="screen_live_room_menu_first_second_required">메뉴 1과 메뉴 2를 먼저 설정하세요</string>
     <string name="screen_live_room_cancel_reason_required">취소사유를 입력하세요.</string>
+    <!-- Live Room Edit -->
+    <string name="msg_live_room_edit_invalid_request">잘못된 요청입니다.</string>
+    <string name="msg_live_room_edit_no_changes">변경사항이 없습니다.</string>
+    <string name="msg_live_room_edit_update_failed">라이브 정보를 수정하지 못했습니다.\n다시 시도해 주세요.</string>
     <!-- Live Room Create -->
     <string name="screen_live_room_create_title">라이브 만들기</string>
     <string name="screen_live_room_create_get_recent_info">최근 데이터 가져오기</string>