diff --git a/src/main/kotlin/kr/co/vividnext/sodalive/v2/gift/adapter/out/persistence/GiftApplicationNoSequence.kt b/src/main/kotlin/kr/co/vividnext/sodalive/v2/gift/adapter/out/persistence/GiftApplicationNoSequence.kt
index 988d1cd7..73307433 100644
--- a/src/main/kotlin/kr/co/vividnext/sodalive/v2/gift/adapter/out/persistence/GiftApplicationNoSequence.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/v2/gift/adapter/out/persistence/GiftApplicationNoSequence.kt
@@ -9,10 +9,18 @@ import javax.persistence.UniqueConstraint
 @Entity
 @Table(
     name = "gift_application_no_sequence",
-    uniqueConstraints = [UniqueConstraint(name = "uk_gift_application_no_sequence_date", columnNames = ["sequence_date"])]
+    uniqueConstraints = [
+        UniqueConstraint(
+            name = "uk_gift_application_no_sequence_category_date",
+            columnNames = ["category_id", "sequence_date"]
+        )
+    ]
 )
 class GiftApplicationNoSequence(
-    @Column(name = "sequence_date", nullable = false, length = 8)
+    @Column(name = "category_id", nullable = false)
+    val categoryId: Long,
+
+    @Column(name = "sequence_date", nullable = false, length = 6)
     val sequenceDate: String,
 
     @Column(name = "last_sequence", nullable = false)
diff --git a/src/main/kotlin/kr/co/vividnext/sodalive/v2/gift/adapter/out/persistence/GiftApplicationNoSequenceRepository.kt b/src/main/kotlin/kr/co/vividnext/sodalive/v2/gift/adapter/out/persistence/GiftApplicationNoSequenceRepository.kt
index b557d321..5a938dd4 100644
--- a/src/main/kotlin/kr/co/vividnext/sodalive/v2/gift/adapter/out/persistence/GiftApplicationNoSequenceRepository.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/v2/gift/adapter/out/persistence/GiftApplicationNoSequenceRepository.kt
@@ -7,9 +7,19 @@ import org.springframework.data.repository.query.Param
 import javax.persistence.LockModeType
 
 interface GiftApplicationNoSequenceRepository : JpaRepository<GiftApplicationNoSequence, Long> {
-    fun findBySequenceDate(sequenceDate: String): GiftApplicationNoSequence?
+    fun findByCategoryIdAndSequenceDate(categoryId: Long, sequenceDate: String): GiftApplicationNoSequence?
 
     @Lock(LockModeType.PESSIMISTIC_WRITE)
-    @Query("select s from GiftApplicationNoSequence s where s.sequenceDate = :sequenceDate")
-    fun findBySequenceDateForUpdate(@Param("sequenceDate") sequenceDate: String): GiftApplicationNoSequence?
+    @Query(
+        """
+        select s
+        from GiftApplicationNoSequence s
+        where s.categoryId = :categoryId
+          and s.sequenceDate = :sequenceDate
+        """
+    )
+    fun findByCategoryIdAndSequenceDateForUpdate(
+        @Param("categoryId") categoryId: Long,
+        @Param("sequenceDate") sequenceDate: String
+    ): GiftApplicationNoSequence?
 }
diff --git a/src/test/kotlin/kr/co/vividnext/sodalive/v2/gift/adapter/out/persistence/GiftEntityMappingTest.kt b/src/test/kotlin/kr/co/vividnext/sodalive/v2/gift/adapter/out/persistence/GiftEntityMappingTest.kt
index 9a758734..cf7e4057 100644
--- a/src/test/kotlin/kr/co/vividnext/sodalive/v2/gift/adapter/out/persistence/GiftEntityMappingTest.kt
+++ b/src/test/kotlin/kr/co/vividnext/sodalive/v2/gift/adapter/out/persistence/GiftEntityMappingTest.kt
@@ -35,8 +35,11 @@ class GiftEntityMappingTest @Autowired constructor(
     fun shouldSaveAndFindGiftWithDelivery() {
         val category = giftCategoryRepository.save(
             GiftCategory(
+                classificationNumber = "100",
                 categoryCode = "DOLL",
                 name = "인형",
+                receiptCode = "A",
+                representativeItem = "피규어",
                 requiresDamageWaiver = true
             )
         )
@@ -89,9 +92,9 @@ class GiftEntityMappingTest @Autowired constructor(
     }
 
     @Test
-    @DisplayName("신청번호와 카테고리 코드와 리뷰 선물 ID는 중복 저장할 수 없다")
+    @DisplayName("신청번호와 카테고리 unique 값과 리뷰 선물 ID는 중복 저장할 수 없다")
     fun shouldRejectDuplicateUniqueValues() {
-        val category = giftCategoryRepository.save(GiftCategory(categoryCode = "DOLL", name = "인형"))
+        val category = giftCategoryRepository.save(giftCategory("100", "DOLL", "A"))
         val gift = giftRepository.save(gift(category.id!!, "G20260929000001"))
         giftRepository.saveAndFlush(gift(category.id!!, "G20260929000002"))
         giftReviewRepository.saveAndFlush(GiftReview(giftId = gift.id!!, senderMemberId = 1L, rating = 5))
@@ -100,7 +103,13 @@ class GiftEntityMappingTest @Autowired constructor(
             giftRepository.saveAndFlush(gift(category.id!!, "G20260929000001"))
         }
         assertThrows(DataIntegrityViolationException::class.java) {
-            giftCategoryRepository.saveAndFlush(GiftCategory(categoryCode = "DOLL", name = "중복"))
+            giftCategoryRepository.saveAndFlush(giftCategory("101", "DOLL", "B"))
+        }
+        assertThrows(DataIntegrityViolationException::class.java) {
+            giftCategoryRepository.saveAndFlush(giftCategory("100", "TOY", "B"))
+        }
+        assertThrows(DataIntegrityViolationException::class.java) {
+            giftCategoryRepository.saveAndFlush(giftCategory("101", "TOY", "A"))
         }
         assertThrows(DataIntegrityViolationException::class.java) {
             giftReviewRepository.saveAndFlush(GiftReview(giftId = gift.id!!, senderMemberId = 1L, rating = 4))
@@ -108,13 +117,15 @@ class GiftEntityMappingTest @Autowired constructor(
     }
 
     @Test
-    @DisplayName("날짜별 신청번호 채번 sequence를 저장한다")
+    @DisplayName("카테고리와 날짜별 신청번호 채번 sequence를 저장한다")
     fun shouldSaveApplicationNoSequence() {
+        val category = giftCategoryRepository.save(giftCategory("100", "DOLL", "A"))
         val sequence = giftApplicationNoSequenceRepository.save(
-            GiftApplicationNoSequence(sequenceDate = "20260929", lastSequence = 1)
+            GiftApplicationNoSequence(categoryId = category.id!!, sequenceDate = "260929", lastSequence = 1)
         )
 
-        assertEquals("20260929", sequence.sequenceDate)
+        assertEquals(category.id, sequence.categoryId)
+        assertEquals("260929", sequence.sequenceDate)
         assertEquals(1, sequence.lastSequence)
     }
 
@@ -134,4 +145,12 @@ class GiftEntityMappingTest @Autowired constructor(
         senderPrivacyAgreedAt = LocalDateTime.of(2026, 9, 29, 12, 0),
         damageWaiverAgreed = true
     )
+
+    private fun giftCategory(classificationNumber: String, categoryCode: String, receiptCode: String) = GiftCategory(
+        classificationNumber = classificationNumber,
+        categoryCode = categoryCode,
+        name = "인형",
+        receiptCode = receiptCode,
+        representativeItem = "피규어"
+    )
 }