diff --git a/src/main/java/aromanticcat/umcproject/repository/MemberRepository.java b/src/main/java/aromanticcat/umcproject/repository/MemberRepository.java
new file mode 100644
index 0000000..a3a099e
--- /dev/null
+++ b/src/main/java/aromanticcat/umcproject/repository/MemberRepository.java
@@ -0,0 +1,7 @@
+package aromanticcat.umcproject.repository;
+
+import aromanticcat.umcproject.entity.Member;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface MemberRepository extends JpaRepository<Member, Long> {
+}
diff --git a/src/main/java/aromanticcat/umcproject/repository/NangmanLetterRepository.java b/src/main/java/aromanticcat/umcproject/repository/NangmanLetterRepository.java
new file mode 100644
index 0000000..79a52e5
--- /dev/null
+++ b/src/main/java/aromanticcat/umcproject/repository/NangmanLetterRepository.java
@@ -0,0 +1,7 @@
+package aromanticcat.umcproject.repository;
+
+import aromanticcat.umcproject.entity.NangmanLetter;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface NangmanLetterRepository extends JpaRepository<NangmanLetter, Long> {
+}
diff --git a/src/test/java/aromanticcat/umcproject/repository/NangmanLetterTests.java b/src/test/java/aromanticcat/umcproject/repository/NangmanLetterTests.java
new file mode 100644
index 0000000..414e229
--- /dev/null
+++ b/src/test/java/aromanticcat/umcproject/repository/NangmanLetterTests.java
@@ -0,0 +1,39 @@
+package aromanticcat.umcproject.repository;
+
+import aromanticcat.umcproject.entity.Member;
+import aromanticcat.umcproject.entity.NangmanLetter;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+public class NangmanLetterTests {
+
+    @Autowired
+    private NangmanLetterRepository nangmanLetterRepository;
+
+    @Autowired
+    private MemberRepository memberRepository;
+
+
+    @Test
+    public void testInsertNangmanLetter(){
+
+        Member member1 = Member.builder()
+                .email("test@email.com")
+                .nickname("member1")
+                .coin(0)
+                .build();
+        memberRepository.save(member1);
+
+        NangmanLetter nangmanLetter = NangmanLetter.builder()
+                .is_public(false)
+                .sender_nickname("낭만적인 고양이")
+                .content("제 고민을 들어주세요")
+                .member(member1)
+                .build();
+        NangmanLetter result = nangmanLetterRepository.save(nangmanLetter);
+
+        System.out.println(result);
+    }
+}