diff --git a/src/main/kotlin/com/example/boheom/domain/feed/presentation/dto/response/FeedDetailsResponse.kt b/src/main/kotlin/com/example/boheom/domain/feed/presentation/dto/response/FeedDetailsResponse.kt
index 5349318..2659940 100644
--- a/src/main/kotlin/com/example/boheom/domain/feed/presentation/dto/response/FeedDetailsResponse.kt
+++ b/src/main/kotlin/com/example/boheom/domain/feed/presentation/dto/response/FeedDetailsResponse.kt
@@ -16,5 +16,6 @@ data class FeedDetailsResponse(
     val view: Int,
     val recruitment: Int,
     val applyCount: Int,
-    val isMine: Boolean
+    val isApplied: Boolean,
+    val isMine: Boolean,
 )
diff --git a/src/main/kotlin/com/example/boheom/domain/feed/service/QueryFeedDetailsService.kt b/src/main/kotlin/com/example/boheom/domain/feed/service/QueryFeedDetailsService.kt
index 7715135..3ea7b40 100644
--- a/src/main/kotlin/com/example/boheom/domain/feed/service/QueryFeedDetailsService.kt
+++ b/src/main/kotlin/com/example/boheom/domain/feed/service/QueryFeedDetailsService.kt
@@ -5,6 +5,7 @@ import com.example.boheom.domain.feed.domain.repository.ApplyRepository
 import com.example.boheom.domain.feed.domain.repository.FeedTagRepository
 import com.example.boheom.domain.feed.facade.FeedFacade
 import com.example.boheom.domain.feed.presentation.dto.response.FeedDetailsResponse
+import com.example.boheom.domain.user.domain.User
 import com.example.boheom.domain.user.facade.UserFacade
 import org.springframework.stereotype.Service
 import org.springframework.transaction.annotation.Transactional
@@ -19,10 +20,14 @@ class QueryFeedDetailsService(
 ) {
     @Transactional
     fun execute(feedId: UUID): FeedDetailsResponse {
+        val user = userFacade.getCurrentUser()
         val feed = feedFacade.getByFeedId(feedId)
         val tags = feedTagRepository.findAllByFeed(feed).map { it.name }
         val applyCount = applyRepository.countByFeed(feed)
+        val isApplied = applyRepository.existsByUserAndFeed(user, feed)
+
         feed.plusView()
+
         return FeedDetailsResponse(
             feed.id,
             feed.title,
@@ -35,12 +40,12 @@ class QueryFeedDetailsService(
             feed.view,
             feed.recruitment,
             applyCount,
-            getIsMine(feed)
+            isApplied,
+            getIsMine(feed, user)
         )
     }
 
-    fun getIsMine(feed: Feed): Boolean {
-        val user = userFacade.getCurrentUser()
+    fun getIsMine(feed: Feed, user: User): Boolean {
         return user.equals(feed.user)
     }
 }
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