diff --git a/app/main.py b/app/main.py
index 52a5815..ead4bf1 100644
--- a/app/main.py
+++ b/app/main.py
@@ -302,3 +302,44 @@ def version():
         "version": "0.1.0",
         "description": "Agent/人类协同任务管理平台"
     }
+
+
+# ============ Projects (update/delete) ============
+
+@app.patch("/projects/{project_id}", response_model=schemas.ProjectResponse)
+def update_project(project_id: int, project_update: schemas.ProjectUpdate, db: Session = Depends(get_db)):
+    project = db.query(models.Project).filter(models.Project.id == project_id).first()
+    if not project:
+        raise HTTPException(status_code=404, detail="Project not found")
+    update_data = project_update.model_dump(exclude_unset=True)
+    for field, value in update_data.items():
+        setattr(project, field, value)
+    db.commit()
+    db.refresh(project)
+    return project
+
+
+@app.delete("/projects/{project_id}", status_code=status.HTTP_204_NO_CONTENT)
+def delete_project(project_id: int, db: Session = Depends(get_db)):
+    project = db.query(models.Project).filter(models.Project.id == project_id).first()
+    if not project:
+        raise HTTPException(status_code=404, detail="Project not found")
+    db.delete(project)
+    db.commit()
+    return None
+
+
+# ============ Users (update/delete) ============
+
+@app.patch("/users/{user_id}", response_model=schemas.UserResponse)
+def update_user(user_id: int, db: Session = Depends(get_db), full_name: str = None, email: str = None):
+    user = db.query(models.User).filter(models.User.id == user_id).first()
+    if not user:
+        raise HTTPException(status_code=404, detail="User not found")
+    if full_name is not None:
+        user.full_name = full_name
+    if email is not None:
+        user.email = email
+    db.commit()
+    db.refresh(user)
+    return user