diff --git a/src/main/java/com/umc/DongnaeFriend/domain/dongnae/controller/DongnaeCommentController.java b/src/main/java/com/umc/DongnaeFriend/domain/dongnae/controller/DongnaeCommentController.java
new file mode 100644
index 0000000..af6d763
--- /dev/null
+++ b/src/main/java/com/umc/DongnaeFriend/domain/dongnae/controller/DongnaeCommentController.java
@@ -0,0 +1,23 @@
+package com.umc.DongnaeFriend.domain.dongnae.controller;
+
+import com.umc.DongnaeFriend.domain.account.sharing.dto.ReqSharingCommentDto;
+import com.umc.DongnaeFriend.domain.dongnae.dto.DongnaeCommentDto;
+import com.umc.DongnaeFriend.domain.dongnae.service.DongnaeCommentService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.*;
+
+@RequiredArgsConstructor
+@RestController
+@RequestMapping("/town-information/comments")
+public class DongnaeCommentController {
+    private final DongnaeCommentService dongnaeCommentService;
+
+    // [동네정보] 댓글 등록
+    @PostMapping("/{townInformationId}")
+    public String postComment(@PathVariable("townInformationId") Long townInformationId, @RequestBody DongnaeCommentDto dongnaeCommentDto) {
+        dongnaeCommentService.newComment(townInformationId, dongnaeCommentDto);
+        return "";
+    }
+
+
+}
diff --git a/src/main/java/com/umc/DongnaeFriend/domain/dongnae/dto/DongnaeCommentDto.java b/src/main/java/com/umc/DongnaeFriend/domain/dongnae/dto/DongnaeCommentDto.java
new file mode 100644
index 0000000..8887994
--- /dev/null
+++ b/src/main/java/com/umc/DongnaeFriend/domain/dongnae/dto/DongnaeCommentDto.java
@@ -0,0 +1,13 @@
+package com.umc.DongnaeFriend.domain.dongnae.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@NoArgsConstructor
+@AllArgsConstructor
+public class DongnaeCommentDto {
+    Long parentCommentId;
+    String content;
+}
diff --git a/src/main/java/com/umc/DongnaeFriend/domain/dongnae/respository/DongnaeCommentRepository.java b/src/main/java/com/umc/DongnaeFriend/domain/dongnae/respository/DongnaeCommentRepository.java
index c5368cf..c1401ef 100644
--- a/src/main/java/com/umc/DongnaeFriend/domain/dongnae/respository/DongnaeCommentRepository.java
+++ b/src/main/java/com/umc/DongnaeFriend/domain/dongnae/respository/DongnaeCommentRepository.java
@@ -1,6 +1,8 @@
 package com.umc.DongnaeFriend.domain.dongnae.respository;
 
+import com.umc.DongnaeFriend.domain.dongnae.entity.DongnaeBoard;
 import com.umc.DongnaeFriend.domain.dongnae.entity.DongnaeComment;
+import com.umc.DongnaeFriend.domain.user.entity.User;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.query.Param;
@@ -16,4 +18,9 @@ public interface DongnaeCommentRepository extends JpaRepository<DongnaeComment,
     @Query(value = "select c from DongnaeComment c join fetch c.dongnaeBoard d " +
             "where c.user.id = :userId order by c.createdAt desc")
             List<DongnaeComment> getCommentByUserIdAndBoard(@Param("userId") Long userId);
+    @Query("SELECT u FROM User u WHERE u.id = :user_id")
+    User findByUserId(@Param("user_id") Long user_id);
+
+    @Query("SELECT db FROM DongnaeBoard db WHERE db.id = :dongnae_board_id")
+    DongnaeBoard findByDongnaeBoardId(@Param("dongnae_board_id") Long dongnae_board_id);
 }
diff --git a/src/main/java/com/umc/DongnaeFriend/domain/dongnae/service/DongnaeCommentService.java b/src/main/java/com/umc/DongnaeFriend/domain/dongnae/service/DongnaeCommentService.java
new file mode 100644
index 0000000..ccd3e3a
--- /dev/null
+++ b/src/main/java/com/umc/DongnaeFriend/domain/dongnae/service/DongnaeCommentService.java
@@ -0,0 +1,61 @@
+package com.umc.DongnaeFriend.domain.dongnae.service;
+
+import com.umc.DongnaeFriend.domain.account.sharing.entity.SharingBoard;
+import com.umc.DongnaeFriend.domain.account.sharing.entity.SharingComment;
+import com.umc.DongnaeFriend.domain.dongnae.dto.DongnaeCommentDto;
+import com.umc.DongnaeFriend.domain.dongnae.entity.DongnaeBoard;
+import com.umc.DongnaeFriend.domain.dongnae.entity.DongnaeComment;
+import com.umc.DongnaeFriend.domain.dongnae.respository.DongnaeCommentRepository;
+import com.umc.DongnaeFriend.domain.user.entity.User;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+
+import java.util.Optional;
+
+@RequiredArgsConstructor
+@Service
+public class DongnaeCommentService {
+    private final DongnaeCommentRepository dongnaeCommentRepository;
+
+
+    public String newComment(Long townInformationId, DongnaeCommentDto dongnaeCommentDto) {
+        // !임시! 유저 가져오기
+        User user = dongnaeCommentRepository.findByUserId(1L);
+
+        // 게시판 가져오기
+        DongnaeBoard dongnaeBoard = dongnaeCommentRepository.findByDongnaeBoardId(townInformationId);
+
+        // 대댓글 등록
+        if (!(dongnaeCommentDto.getParentCommentId() == null)){
+            // 부모 댓글 가져오기
+            Optional<DongnaeComment> parentCommentOptional = dongnaeCommentRepository.findById(dongnaeCommentDto.getParentCommentId());
+            DongnaeComment parentComment = parentCommentOptional.get();
+
+            // 댓글 빌드
+            DongnaeComment comment = DongnaeComment.builder()
+                    .parentComment(parentComment)
+                    .content(dongnaeCommentDto.getContent())
+                    .isDeleted(false)
+                    .dongnaeBoard(dongnaeBoard)
+                    .user(user)
+                    .build();
+
+            dongnaeCommentRepository.save(comment);
+
+            return "대댓글 등록 성공";
+
+        }
+
+        // 댓글 빌드
+        DongnaeComment comment = DongnaeComment.builder()
+                .content(dongnaeCommentDto.getContent())
+                .isDeleted(false)
+                .dongnaeBoard(dongnaeBoard)
+                .user(user)
+                .build();
+
+        dongnaeCommentRepository.save(comment);
+
+        return "댓글 등록 성공";
+    }
+}