diff --git a/app/backend/src/routes/qa.ts b/app/backend/src/routes/qa.ts
new file mode 100644
index 0000000..59ca3fe
--- /dev/null
+++ b/app/backend/src/routes/qa.ts
@@ -0,0 +1,102 @@
+import type { FastifyInstance, FastifyReply } from 'fastify';
+import { z } from 'zod';
+import { prisma } from '../db.js';
+import { requireAuth } from '../plugins/session.js';
+
+const PUBLISHED = 'منتشرشده';
+
+const qaSchema = z.object({
+  body: z.string().trim().min(1).max(1000),
+});
+
+function badInput(reply: FastifyReply) {
+  return reply.code(400).send({ error: 'invalid_input' });
+}
+
+function faDate(date: Date) {
+  return date.toLocaleDateString('fa-IR', { hour: '2-digit', minute: '2-digit' });
+}
+
+export default async function qaRoutes(app: FastifyInstance) {
+  app.get('/api/v1/articles/:slug/qa', async (req, reply) => {
+    const { slug } = req.params as { slug: string };
+    const article = await prisma.article.findFirst({
+      where: { slug, status: PUBLISHED, publishedAt: { not: null } },
+      select: { id: true },
+    });
+    if (!article) return reply.code(404).send({ error: 'not_found' });
+
+    const rows = await prisma.question.findMany({
+      where: { articleId: article.id },
+      include: {
+        author: { select: { id: true, name: true, username: true, avatarUrl: true } },
+        answers: { include: { author: { select: { id: true, name: true, username: true, avatarUrl: true } } }, orderBy: { createdAt: 'asc' } },
+      },
+      orderBy: { createdAt: 'desc' },
+    });
+
+    return {
+      items: rows.map(q => ({
+        id: q.id,
+        body: q.body,
+        createdAt: q.createdAt.toISOString(),
+        time: faDate(q.createdAt),
+        author: q.author,
+        answers: q.answers.map(a => ({
+          id: a.id,
+          body: a.body,
+          createdAt: a.createdAt.toISOString(),
+          time: faDate(a.createdAt),
+          author: a.author,
+        })),
+      })),
+    };
+  });
+
+  app.post('/api/v1/articles/:slug/qa', { preHandler: requireAuth() }, async (req, reply) => {
+    const parsed = qaSchema.safeParse(req.body);
+    if (!parsed.success) return badInput(reply);
+    const { slug } = req.params as { slug: string };
+    const article = await prisma.article.findFirst({
+      where: { slug, status: PUBLISHED, publishedAt: { not: null } },
+      select: { id: true },
+    });
+    if (!article) return reply.code(404).send({ error: 'not_found' });
+
+    const row = await prisma.question.create({
+      data: { articleId: article.id, authorId: req.session!.userId, body: parsed.data.body },
+      include: { author: { select: { id: true, name: true, username: true, avatarUrl: true } } },
+    });
+
+    return {
+      id: row.id,
+      body: row.body,
+      createdAt: row.createdAt.toISOString(),
+      time: faDate(row.createdAt),
+      author: row.author,
+      answers: [],
+    };
+  });
+
+  app.post('/api/v1/qa/questions/:id/answers', { preHandler: requireAuth() }, async (req, reply) => {
+    const parsed = qaSchema.safeParse(req.body);
+    if (!parsed.success) return badInput(reply);
+    const { id } = req.params as { id: string };
+    
+    const question = await prisma.question.findUnique({ where: { id } });
+    if (!question) return reply.code(404).send({ error: 'not_found' });
+
+    const row = await prisma.answer.create({
+      data: { questionId: id, authorId: req.session!.userId, body: parsed.data.body },
+      include: { author: { select: { id: true, name: true, username: true, avatarUrl: true } } },
+    });
+
+    return {
+      id: row.id,
+      body: row.body,
+      createdAt: row.createdAt.toISOString(),
+      time: faDate(row.createdAt),
+      author: row.author,
+    };
+  });
+}