diff --git a/src/server/model/_client.ts b/src/server/model/_client.ts
index 9b6c4ce..fafa65d 100644
--- a/src/server/model/_client.ts
+++ b/src/server/model/_client.ts
@@ -1,3 +1,29 @@
 import { PrismaClient } from '@prisma/client';
+import { logger } from '../utils/logger';
+import { env } from '../utils/env';
 
-export const prisma = new PrismaClient();
+const debugEvent = {
+  emit: 'event',
+  level: 'query',
+} as const;
+
+const log = env.dbDebug ? [debugEvent] : [];
+
+export const prisma = new PrismaClient({
+  log,
+});
+
+if (env.dbDebug) {
+  prisma.$on('query', async (e) => {
+    // eslint-disable-next-line @typescript-eslint/ban-ts-comment
+    // @ts-ignore
+    // console.log(`${e.query} ${e.params}`);
+
+    const params = JSON.parse(e.params);
+    logger.info(
+      e.query.replace(/\$(\d+)/g, (_, index) => {
+        return "'" + params[Number(index) - 1] + "'";
+      })
+    );
+  });
+}
diff --git a/src/server/utils/env.ts b/src/server/utils/env.ts
index 6e21a88..4e0007e 100644
--- a/src/server/utils/env.ts
+++ b/src/server/utils/env.ts
@@ -4,7 +4,8 @@ export const env = {
   websiteId: process.env.WEBSITE_ID,
   sandboxMemoryLimit: process.env.SANDBOX_MEMORY_LIMIT
     ? Number(process.env.SANDBOX_MEMORY_LIMIT)
-    : 16, // MB
+    : 16, // unit: MB
+  dbDebug: checkEnvTrusty(process.env.DB_DEBUG),
 };
 
 export function checkEnvTrusty(env: string | undefined): boolean {