diff --git a/backend/src/routes/parents/parents.controller.ts b/backend/src/routes/parents/parents.controller.ts
index a6ed455..edadf2b 100644
--- a/backend/src/routes/parents/parents.controller.ts
+++ b/backend/src/routes/parents/parents.controller.ts
@@ -1,7 +1,6 @@
 import {
   Body,
   Controller,
-  Delete,
   Get,
   Param,
   Patch,
@@ -9,21 +8,27 @@ import {
   UseGuards,
 } from '@nestjs/common';
 import { ParentsService } from './parents.service';
+import { UserService } from '../user/user.service';
 import { Parents } from 'src/entities/parents.entity';
+import { Users } from 'src/entities/users.entity';
 import { Roles } from 'src/common/decorators/roles.decorator';
-import { RoleType } from 'src/entities/users.entity';
-import { ApiBody, ApiOperation, ApiResponse, ApiTags } from '@nestjs/swagger';
+import { RoleType, StatutUtilisateurType } from 'src/entities/users.entity';
+import { ApiBody, ApiOperation, ApiParam, ApiResponse, ApiTags } from '@nestjs/swagger';
 import { CreateParentDto } from '../user/dto/create_parent.dto';
 import { UpdateParentsDto } from '../user/dto/update_parent.dto';
 import { AuthGuard } from 'src/common/guards/auth.guard';
 import { RolesGuard } from 'src/common/guards/roles.guard';
+import { User } from 'src/common/decorators/user.decorator';
 import { PendingFamilyDto } from './dto/pending-family.dto';
 
 @ApiTags('Parents')
 @Controller('parents')
 @UseGuards(AuthGuard, RolesGuard)
 export class ParentsController {
-  constructor(private readonly parentsService: ParentsService) {}
+  constructor(
+    private readonly parentsService: ParentsService,
+    private readonly userService: UserService,
+  ) {}
 
   @Get('pending-families')
   @Roles(RoleType.SUPER_ADMIN, RoleType.ADMINISTRATEUR, RoleType.GESTIONNAIRE)
@@ -34,6 +39,29 @@ export class ParentsController {
     return this.parentsService.getPendingFamilies();
   }
 
+  @Post(':parentId/valider-dossier')
+  @Roles(RoleType.SUPER_ADMIN, RoleType.ADMINISTRATEUR, RoleType.GESTIONNAIRE)
+  @ApiOperation({ summary: 'Valider tout le dossier famille (les 2 parents en une fois)' })
+  @ApiParam({ name: 'parentId', description: "UUID d'un des parents (user_id)" })
+  @ApiResponse({ status: 200, description: 'Utilisateurs validés (famille)' })
+  @ApiResponse({ status: 404, description: 'Parent introuvable' })
+  @ApiResponse({ status: 403, description: 'Accès refusé' })
+  async validerDossierFamille(
+    @Param('parentId') parentId: string,
+    @User() currentUser: Users,
+    @Body('comment') comment?: string,
+  ): Promise<Users[]> {
+    const familyIds = await this.parentsService.getFamilyUserIds(parentId);
+    const validated: Users[] = [];
+    for (const userId of familyIds) {
+      const user = await this.userService.findOne(userId);
+      if (user.statut !== StatutUtilisateurType.EN_ATTENTE && user.statut !== StatutUtilisateurType.REFUSE) continue;
+      const saved = await this.userService.validateUser(userId, currentUser, comment);
+      validated.push(saved);
+    }
+    return validated;
+  }
+
   @Roles(RoleType.SUPER_ADMIN, RoleType.GESTIONNAIRE, RoleType.ADMINISTRATEUR)
   @Get()
   @ApiResponse({ status: 200, type: [Parents], description: 'Liste des parents' })
diff --git a/backend/src/routes/parents/parents.module.ts b/backend/src/routes/parents/parents.module.ts
index dc57fe6..6cb557b 100644
--- a/backend/src/routes/parents/parents.module.ts
+++ b/backend/src/routes/parents/parents.module.ts
@@ -1,12 +1,16 @@
-import { Module } from '@nestjs/common';
+import { Module, forwardRef } from '@nestjs/common';
 import { TypeOrmModule } from '@nestjs/typeorm';
 import { Parents } from 'src/entities/parents.entity';
 import { ParentsController } from './parents.controller';
 import { ParentsService } from './parents.service';
 import { Users } from 'src/entities/users.entity';
+import { UserModule } from '../user/user.module';
 
 @Module({
-    imports: [TypeOrmModule.forFeature([Parents, Users])],
+    imports: [
+        TypeOrmModule.forFeature([Parents, Users]),
+        forwardRef(() => UserModule),
+    ],
     controllers: [ParentsController],
     providers: [ParentsService],
     exports: [ParentsService,
diff --git a/backend/src/routes/parents/parents.service.ts b/backend/src/routes/parents/parents.service.ts
index e2c50e6..3aa174d 100644
--- a/backend/src/routes/parents/parents.service.ts
+++ b/backend/src/routes/parents/parents.service.ts
@@ -119,4 +119,49 @@ export class ParentsService {
       numero_dossier: r.numero_dossier ?? null,
     }));
   }
+
+  /**
+   * Retourne les user_id de tous les parents de la même famille (co_parent ou enfants partagés).
+   * @throws NotFoundException si parentId n'est pas un parent
+   */
+  async getFamilyUserIds(parentId: string): Promise<string[]> {
+    const raw = await this.parentsRepository.query(
+      `
+      WITH RECURSIVE
+      links AS (
+        SELECT p.id_utilisateur AS p1, p.id_co_parent AS p2 FROM parents p WHERE p.id_co_parent IS NOT NULL
+        UNION ALL
+        SELECT p.id_co_parent AS p1, p.id_utilisateur AS p2 FROM parents p WHERE p.id_co_parent IS NOT NULL
+        UNION ALL
+        SELECT ep1.id_parent AS p1, ep2.id_parent AS p2
+        FROM enfants_parents ep1
+        JOIN enfants_parents ep2 ON ep2.id_enfant = ep1.id_enfant AND ep1.id_parent < ep2.id_parent
+        UNION ALL
+        SELECT ep2.id_parent AS p1, ep1.id_parent AS p2
+        FROM enfants_parents ep1
+        JOIN enfants_parents ep2 ON ep2.id_enfant = ep1.id_enfant AND ep1.id_parent < ep2.id_parent
+      ),
+      rec AS (
+        SELECT id_utilisateur AS id, id_utilisateur AS rep FROM parents
+        UNION
+        SELECT l.p2 AS id, LEAST(rec_alias.rep, l.p2) AS rep FROM links l JOIN rec rec_alias ON rec_alias.id = l.p1
+      ),
+      family_rep AS (
+        SELECT id, (MIN(rep::text))::uuid AS rep FROM rec GROUP BY id
+      ),
+      input_rep AS (
+        SELECT rep FROM family_rep WHERE id = $1::uuid LIMIT 1
+      )
+      SELECT fr.id::text AS id
+      FROM family_rep fr
+      CROSS JOIN input_rep ir
+      WHERE fr.rep = ir.rep
+      `,
+      [parentId],
+    );
+    if (!raw || raw.length === 0) {
+      throw new NotFoundException('Parent introuvable ou pas encore enregistré en base.');
+    }
+    return raw.map((r: { id: string }) => r.id);
+  }
 }