diff --git a/src/main/kotlin/kr/co/vividnext/sodalive/admin/member/AdminMemberBlockController.kt b/src/main/kotlin/kr/co/vividnext/sodalive/admin/member/AdminMemberBlockController.kt
new file mode 100644
index 00000000..da8a0553
--- /dev/null
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/admin/member/AdminMemberBlockController.kt
@@ -0,0 +1,19 @@
+package kr.co.vividnext.sodalive.admin.member
+
+import kr.co.vividnext.sodalive.common.ApiResponse
+import org.springframework.security.access.prepost.PreAuthorize
+import org.springframework.web.bind.annotation.PostMapping
+import org.springframework.web.bind.annotation.RequestBody
+import org.springframework.web.bind.annotation.RequestMapping
+import org.springframework.web.bind.annotation.RestController
+
+@RestController
+@RequestMapping("/admin/member/block")
+@PreAuthorize("hasRole('ADMIN')")
+class AdminMemberBlockController(private val service: AdminMemberBlockService) {
+    @PostMapping
+    fun blockMember(@RequestBody request: AdminMemberBlockRequest) = ApiResponse.ok(
+        service.blockMember(request),
+        "차단되었습니다."
+    )
+}
diff --git a/src/main/kotlin/kr/co/vividnext/sodalive/admin/member/AdminMemberBlockRequest.kt b/src/main/kotlin/kr/co/vividnext/sodalive/admin/member/AdminMemberBlockRequest.kt
new file mode 100644
index 00000000..d3adfe95
--- /dev/null
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/admin/member/AdminMemberBlockRequest.kt
@@ -0,0 +1,6 @@
+package kr.co.vividnext.sodalive.admin.member
+
+data class AdminMemberBlockRequest(
+    val memberId: Long,
+    val reason: String
+)
diff --git a/src/main/kotlin/kr/co/vividnext/sodalive/admin/member/AdminMemberBlockService.kt b/src/main/kotlin/kr/co/vividnext/sodalive/admin/member/AdminMemberBlockService.kt
new file mode 100644
index 00000000..42d6c1b6
--- /dev/null
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/admin/member/AdminMemberBlockService.kt
@@ -0,0 +1,73 @@
+package kr.co.vividnext.sodalive.admin.member
+
+import kr.co.vividnext.sodalive.common.SodaException
+import kr.co.vividnext.sodalive.member.MemberService
+import kr.co.vividnext.sodalive.member.SignOut
+import kr.co.vividnext.sodalive.member.SignOutRepository
+import kr.co.vividnext.sodalive.member.auth.AuthRepository
+import kr.co.vividnext.sodalive.member.auth.BlockAuth
+import kr.co.vividnext.sodalive.member.auth.BlockAuthRepository
+import org.springframework.stereotype.Service
+import org.springframework.transaction.annotation.Transactional
+
+@Service
+class AdminMemberBlockService(
+    private val adminMemberRepository: AdminMemberRepository,
+    private val signOutRepository: SignOutRepository,
+    private val memberService: MemberService,
+    private val authRepository: AuthRepository,
+    private val blockAuthRepository: BlockAuthRepository
+) {
+    @Transactional
+    fun blockMember(request: AdminMemberBlockRequest) {
+        if (request.reason.isBlank()) {
+            throw SodaException(messageKey = "member.validation.signout_reason_required")
+        }
+
+        val member = adminMemberRepository.findByIdAndActive(memberId = request.memberId)
+            ?: throw SodaException(messageKey = "admin.member.not_found")
+
+        val auth = member.auth
+        val memberIdsToBlock = if (auth != null) {
+            authRepository.getActiveMemberIdsByNameAndBirthAndDiAndUniqueCi(
+                name = auth.name,
+                birth = auth.birth,
+                di = auth.di,
+                uniqueCi = auth.uniqueCi
+            )
+                .ifEmpty { listOf(member.id!!) }
+        } else {
+            listOf(member.id!!)
+        }
+
+        memberIdsToBlock
+            .distinct()
+            .forEach { memberId ->
+                val targetMember = adminMemberRepository.findByIdAndActive(memberId = memberId)
+                    ?: return@forEach
+
+                targetMember.isActive = false
+                targetMember.nickname = "deleted_${targetMember.nickname}"
+
+                val signOut = SignOut(reason = request.reason)
+                signOut.member = targetMember
+                signOutRepository.save(signOut)
+
+                memberService.logoutAll(memberId = targetMember.id!!)
+            }
+
+        if (auth == null) return
+        val alreadyBlockedAuthId = blockAuthRepository.findByUniqueCiAndDi(auth.uniqueCi, auth.di)
+        if (alreadyBlockedAuthId == null || alreadyBlockedAuthId <= 0) {
+            blockAuthRepository.save(
+                BlockAuth(
+                    name = auth.name,
+                    birth = auth.birth,
+                    uniqueCi = auth.uniqueCi,
+                    di = auth.di,
+                    gender = auth.gender
+                )
+            )
+        }
+    }
+}