diff --git a/src/main/java/kr/tgwing/tech/blog/service/PostServiceImpl.java b/src/main/java/kr/tgwing/tech/blog/service/PostServiceImpl.java
index ca18879..0ffcb88 100644
--- a/src/main/java/kr/tgwing/tech/blog/service/PostServiceImpl.java
+++ b/src/main/java/kr/tgwing/tech/blog/service/PostServiceImpl.java
@@ -58,6 +58,7 @@ public PostDetail createPost(PostForm form, String writerStudentNumber) {
         Post newPost = Post.builder()
                 .title(form.getTitle())
                 .content(form.getContent())
+                .thumbnail(form.getThumbnail())
                 .writer(writer)
                 .build();
         form.getHashtags().forEach(hashtag -> {