diff --git a/backend/internal/repositories/comments_repository.go b/backend/internal/repositories/comments_repository.go
index 802c9b4..bd3f456 100644
--- a/backend/internal/repositories/comments_repository.go
+++ b/backend/internal/repositories/comments_repository.go
@@ -21,12 +21,41 @@ func NewCommentsRepository(db *sql.DB) CommentRepository {
 	}
 }
 
-func (c *commentsRepository) CreateComment(ctx context.Context, comment *storage.Comment) error {
+func (c *commentsRepository) CreateComment(ctx context.Context, comment *storage.CommentCreate) error {
+	_, err := c.db.Exec("INSERT INTO comments(content, post_id) VALUES(?, ?, ?)", comment.Content, comment.PostID, comment.UserID)
+	if err != nil {
+		c.logger.Error("error insert: " + err.Error())
+		return err
+	}
 	return nil
 }
 
 func (c *commentsRepository) GetAllComments(ctx context.Context) ([]storage.Comment, error) {
-	return nil, nil
+	var result []storage.Comment
+	rows, err := c.db.Query("SELECT id, content, post_id, user_id, created_at FROM comments")
+	if err != nil {
+		c.logger.Error("error scan " + err.Error())
+		return nil, err
+	}
+	for rows.Next() {
+		var id int
+		var content string
+		var postID int
+		var userID int
+		var createdAt string
+		err := rows.Scan(&id, &content, &postID, &userID, &createdAt)
+		if err != nil {
+			c.logger.Error("error scan: " + err.Error())
+		}
+		result = append(result, storage.Comment{
+			ID:        id,
+			Content:   content,
+			PostID:    postID,
+			UserID:    userID,
+			CreatedAt: createdAt,
+		})
+	}
+	return result, nil
 }
 
 func (c *commentsRepository) GetCommentsOfPost(ctx context.Context, id int) ([]storage.Comment, error) {
diff --git a/backend/internal/repositories/interface.go b/backend/internal/repositories/interface.go
index 8f87d8e..e1e2ed8 100644
--- a/backend/internal/repositories/interface.go
+++ b/backend/internal/repositories/interface.go
@@ -24,7 +24,7 @@ type AuthRepository interface {
 }
 
 type CommentRepository interface {
-	CreateComment(ctx context.Context, comment *storage.Comment) error
+	CreateComment(ctx context.Context, comment *storage.CommentCreate) error
 	GetAllComments(ctx context.Context) ([]storage.Comment, error)
 	GetCommentsOfPost(ctx context.Context, id int) ([]storage.Comment, error)
 	DeleteComment(ctx context.Context, id int) error