diff --git a/api/src/infrastructure/repositories/postgresql/reply.repository.ts b/api/src/infrastructure/repositories/postgresql/reply.repository.ts
new file mode 100644
index 00000000..e16bf4dd
--- /dev/null
+++ b/api/src/infrastructure/repositories/postgresql/reply.repository.ts
@@ -0,0 +1,42 @@
+import { Reply } from '@src/core/entities/review.entity';
+import {
+  CreateReplyParams,
+  ReplyRepository
+} from '@src/core/ports/reply.repository';
+import { AppErrorCode, CustomError } from '@src/error/errors';
+import {
+  ExtendedPrismaClient,
+  ExtendedPrismaTransactionClient
+} from '@src/infrastructure/prisma/types';
+
+export class PostgresqlReplyRepository implements Partial<ReplyRepository> {
+  constructor(private readonly client: ExtendedPrismaClient) {}
+
+  public create = async (
+    params: CreateReplyParams,
+    txClient?: ExtendedPrismaTransactionClient
+  ): Promise<Reply> => {
+    const createdAt = new Date();
+    try {
+      const client = txClient ?? this.client;
+      const reply = await client.reply.create({
+        data: {
+          reviewId: params.reviewId,
+          userId: params.userId,
+          content: params.content,
+          createdAt,
+          updatedAt: createdAt
+        }
+      });
+
+      return reply.convertToEntity();
+    } catch (error: unknown) {
+      throw new CustomError({
+        code: AppErrorCode.INTERNAL_ERROR,
+        cause: error,
+        message: 'failed to create reply',
+        context: { params }
+      });
+    }
+  };
+}
diff --git a/api/test/infrastructure/repositories/postgresql/reply.repository.test.ts b/api/test/infrastructure/repositories/postgresql/reply.repository.test.ts
new file mode 100644
index 00000000..cf92f3f3
--- /dev/null
+++ b/api/test/infrastructure/repositories/postgresql/reply.repository.test.ts
@@ -0,0 +1,95 @@
+import { AccessLevel, Idp } from '@prisma/client';
+import { randomUUID } from 'crypto';
+import seedrandom from 'seedrandom';
+import { Logger } from 'winston';
+
+import {
+  generateUserNickname,
+  generateUserTag
+} from '@src/core/nickname.generator';
+import {
+  CreateReplyParams,
+} from '@src/core/ports/reply.repository';
+import { generatePrismaClient } from '@src/infrastructure/prisma/prisma.client';
+import { ExtendedPrismaClient } from '@src/infrastructure/prisma/types';
+import { PostgresqlReplyRepository } from '@src/infrastructure/repositories/postgresql/reply.repository';
+
+function generateRandomNumber(userId: string): number {
+  const rand = seedrandom(userId);
+  return Math.floor(rand() * 100000);
+}
+
+describe('Test reply repository', () => {
+  const logger: Partial<Logger> = {
+    error: jest.fn()
+  };
+  let prismaClient: ExtendedPrismaClient;
+  let replyRepository: PostgresqlReplyRepository;
+
+  beforeAll(() => {
+    const config = {
+      host: '127.0.0.1',
+      port: 5435,
+      user: 'mrc-client',
+      password: 'Client123!'
+    };
+    prismaClient = generatePrismaClient(logger as Logger, config);
+    replyRepository = new PostgresqlReplyRepository(prismaClient);
+  });
+
+  afterAll(async () => {
+    await prismaClient.$disconnect();
+  });
+
+  describe('Test create', () => {
+    const userId = randomUUID();
+    const reviewId = generateRandomNumber(userId);
+    const content = 'randomContent';
+    const createdAt = new Date();
+
+    beforeAll(async () => {
+      await prismaClient.user.create({
+        data: {
+          id: userId,
+          nickname: generateUserNickname(userId),
+          tag: generateUserTag(userId),
+          idp: Idp.GOOGLE,
+          email: `${userId}@gmail.com`,
+          accessLevel: AccessLevel.USER,
+          createdAt,
+          updatedAt: createdAt
+        }
+      });
+      await prismaClient.review.create({
+        data: {
+          id: reviewId,
+          userId,
+          title: 'randomTitle',
+          movieName: 'randomMovieName',
+          content,
+          createdAt,
+          updatedAt: createdAt
+        }
+      });
+    });
+
+    afterAll(async () => {
+      await prismaClient.review.delete({ where: { id: reviewId } });
+      await prismaClient.user.delete({ where: { id: userId } });
+    });
+
+    it('should success when valid', async () => {
+      const params: CreateReplyParams = {
+        reviewId,
+        userId,
+        content
+      };
+
+      const replyCreated = await replyRepository.create(params);
+
+      expect(replyCreated.getData()).toEqual(
+        expect.objectContaining({ reviewId, userId, content })
+      );
+    });
+  });
+});