diff --git a/ProgramManager/src/Application/GozareshgirProgramManager.Application/Modules/Projects/Commands/ChangeTaskPriority/ChangeTaskPriorityCommand.cs b/ProgramManager/src/Application/GozareshgirProgramManager.Application/Modules/Projects/Commands/ChangeTaskPriority/ChangeTaskPriorityCommand.cs
index 23d23830..a1886b56 100644
--- a/ProgramManager/src/Application/GozareshgirProgramManager.Application/Modules/Projects/Commands/ChangeTaskPriority/ChangeTaskPriorityCommand.cs
+++ b/ProgramManager/src/Application/GozareshgirProgramManager.Application/Modules/Projects/Commands/ChangeTaskPriority/ChangeTaskPriorityCommand.cs
@@ -6,35 +6,103 @@ using GozareshgirProgramManager.Domain.ProjectAgg.Repositories;
 
 namespace GozareshgirProgramManager.Application.Modules.Projects.Commands.ChangeTaskPriority;
 
-/// <summary>
-/// Command to change a task priority.
-/// </summary>
-public record ChangeTaskPriorityCommand(Guid TaskId, TaskPriority Priority) : IBaseCommand;
+public record ChangeTaskPriorityCommand(
+    Guid Id,
+    ProjectHierarchyLevel Level,
+    TaskPriority Priority
+) : IBaseCommand;
 
 public class ChangeTaskPriorityCommandHandler : IBaseCommandHandler<ChangeTaskPriorityCommand>
 {
     private readonly IProjectTaskRepository _taskRepository;
+    private readonly IProjectPhaseRepository _phaseRepository;
+    private readonly IProjectRepository _projectRepository;
     private readonly IUnitOfWork _unitOfWork;
 
-    public ChangeTaskPriorityCommandHandler(IProjectTaskRepository taskRepository, IUnitOfWork unitOfWork)
+    public ChangeTaskPriorityCommandHandler(
+        IProjectTaskRepository taskRepository,
+        IProjectPhaseRepository phaseRepository,
+        IProjectRepository projectRepository,
+        IUnitOfWork unitOfWork)
     {
         _taskRepository = taskRepository;
+        _phaseRepository = phaseRepository;
+        _projectRepository = projectRepository;
         _unitOfWork = unitOfWork;
     }
 
     public async Task<OperationResult> Handle(ChangeTaskPriorityCommand request, CancellationToken cancellationToken)
     {
-        var task = await _taskRepository.GetByIdAsync(request.TaskId, cancellationToken);
+        switch (request.Level)
+        {
+            case ProjectHierarchyLevel.Task:
+                return await HandleTaskLevelAsync(request.Id, request.Priority, cancellationToken);
+            case ProjectHierarchyLevel.Phase:
+                return await HandlePhaseLevelAsync(request.Id, request.Priority, cancellationToken);
+            case ProjectHierarchyLevel.Project:
+                return await HandleProjectLevelAsync(request.Id, request.Priority, cancellationToken);
+            default:
+                return OperationResult.Failure("سطح نامعتبر است");
+        }
+    }
+
+    // Task-level priority update
+    private async Task<OperationResult> HandleTaskLevelAsync(Guid taskId, TaskPriority priority, CancellationToken ct)
+    {
+        var task = await _taskRepository.GetByIdAsync(taskId, ct);
         if (task is null)
             return OperationResult.NotFound("تسک یافت نشد");
 
-        // Idempotent: if already same priority, skip extra work
-        if (task.Priority != request.Priority)
+        if (task.Priority != priority)
         {
-            task.SetPriority(request.Priority);
+            task.SetPriority(priority);
         }
 
-        await _unitOfWork.SaveChangesAsync(cancellationToken);
+        await _unitOfWork.SaveChangesAsync(ct);
+        return OperationResult.Success();
+    }
+
+    // Phase-level bulk priority update
+    private async Task<OperationResult> HandlePhaseLevelAsync(Guid phaseId, TaskPriority priority, CancellationToken ct)
+    {
+        var phase = await _phaseRepository.GetWithTasksAsync(phaseId);
+        if (phase is null)
+            return OperationResult.NotFound("فاز یافت نشد");
+
+        var tasks = phase.Tasks?.ToList() ?? new List<Domain.ProjectAgg.Entities.ProjectTask>();
+        foreach (var t in tasks)
+        {
+            if (t.Priority != priority)
+            {
+                t.SetPriority(priority);
+            }
+        }
+
+        await _unitOfWork.SaveChangesAsync(ct);
+        return OperationResult.Success();
+    }
+
+    // Project-level bulk priority update across all phases
+    private async Task<OperationResult> HandleProjectLevelAsync(Guid projectId, TaskPriority priority, CancellationToken ct)
+    {
+        var project = await _projectRepository.GetWithFullHierarchyAsync(projectId);
+        if (project is null)
+            return OperationResult.NotFound("پروژه یافت نشد");
+
+        var phases = project.Phases?.ToList() ?? new List<Domain.ProjectAgg.Entities.ProjectPhase>();
+        foreach (var phase in phases)
+        {
+            var tasks = phase.Tasks?.ToList() ?? new List<Domain.ProjectAgg.Entities.ProjectTask>();
+            foreach (var t in tasks)
+            {
+                if (t.Priority != priority)
+                {
+                    t.SetPriority(priority);
+                }
+            }
+        }
+
+        await _unitOfWork.SaveChangesAsync(ct);
         return OperationResult.Success();
     }
 }