diff --git a/case/test_dde_1956753.py b/case/test_dde_1956753.py
new file mode 100644
index 0000000000000000000000000000000000000000..058bf1f13f475e11cc299a38249f13778224a569
--- /dev/null
+++ b/case/test_dde_1956753.py
@@ -0,0 +1,57 @@
+#!/usr/bin/env python3
+# _*_ coding:utf-8 _*_
+"""
+@Time   : 2025/12/02
+@Author : xianglongfei@uniontech.com
+"""
+
+import pytest
+
+from src import sleep
+from apps.dde_autotest_euler.case.base_case import BaseCase
+from public.dde_dock_public_widget import DdeDockPublicWidget
+from apps.dde_autotest_euler.method.dde_method import DdeMethod
+
+
+class TestDdeCase(BaseCase):
+    def test_dde_1956753(self):
+        """【任务栏】个性化任务栏设置大小切换 """
+        dock = DdeDockPublicWidget()
+        #【步骤】:一.鼠标在任务栏右键菜单点击：任务栏设置
+        dock.click_right_menu_dock_set()
+        sleep(3)
+        #【断言】:1.控制中心打开
+        self.assert_process_status(True,"dde-control-center")
+        #【断言】:2.进入个性化菜单
+        sleep(1)
+        self.assert_ocr_exist("个性化")
+        sleep(1)
+        #【断言】:3.进入位置为：下
+        sleep(1)
+        self.assert_dock_location(2)
+        #【断言】:4.进入模式为：高效模式
+        self.assert_dock_mode(1)
+        #【断言】:5.进入大小为：小
+        self.assert_dock_size(40)
+        #【步骤】:二.鼠标点击：大
+        euler=DdeMethod()
+        euler.dde_dock.click_by_img("dock_max.png")
+        sleep(3)
+        #【断言】:6.任务栏大小为：大
+        self.assert_dock_size(100)
+        #【步骤】:三.鼠标点击：小
+        euler.dde_dock.click_by_img("dock_min.png")
+        sleep(3)
+        #【断言】:7.任务栏大小为：小
+        self.assert_dock_size(40)
+    
+    @pytest.fixture(scope="function", autouse=True)
+    def setup_teardown_1956753(self):
+        """前置和后置"""
+        yield
+        #【后置】:1.关闭控制中心
+        dock = DdeDockPublicWidget()
+        dock.close_app("控制中心")
+        sleep(3)
+        #【断言】:1.控制中心关闭
+        self.assert_process_status(False,"dde-control-center")
diff --git a/dde.csv b/dde.csv
index 2566151736a8f9b07a843b67f6b61f0447932607..a61d6249bc9928535e79c85e7f2b72499b208a4f 100644
--- a/dde.csv
+++ b/dde.csv
@@ -136,5 +136,6 @@
 1952211,,,
 1956755,,,
 1955475,,,
+1956753,,,
 1956757,,,
 1956209,,,
\ No newline at end of file
diff --git a/method/image_res/dock_max.png b/method/image_res/dock_max.png
new file mode 100644
index 0000000000000000000000000000000000000000..18a49132b337a3080f86dab460a1f3d98c1cbda5
Binary files /dev/null and b/method/image_res/dock_max.png differ
diff --git a/method/image_res/dock_min.png b/method/image_res/dock_min.png
new file mode 100644
index 0000000000000000000000000000000000000000..514c7f4f0530d42c79ab37c704e50e1582ea19b3
Binary files /dev/null and b/method/image_res/dock_min.png differ
diff --git a/module/dde_dock/dde_dock_assert.py b/module/dde_dock/dde_dock_assert.py
index 9e85a5b5f84698f0486c940a01aeff90d31d5478..1c46cf3d6a1527a529b46d7b7bcf547dfa172495 100644
--- a/module/dde_dock/dde_dock_assert.py
+++ b/module/dde_dock/dde_dock_assert.py
@@ -55,3 +55,29 @@ class DdeDockAssert(AssertCommon):
         logging.info("断言任务栏位置是否: %s", location_text)
         dock_location = DockDbus.get_position()
         AssertCommon.assert_true(dock_location == location)
+
+    @staticmethod
+    def assert_dock_size(size):
+        """断言任务栏大小"""
+        mode_conf = {
+            "efficient": int(1),
+            "fashion": int(0)
+        }
+        size_conf = {
+            "min": int(40),
+            "max": int(100)
+        }
+
+        if size_conf['min'] == size:
+            size_text = "小"
+        elif size_conf['max'] == size:
+            size_text = "大"
+        else:
+            raise AssertionError(f"任务栏大小参数<{size}>未知!")
+        logging.info("断言任务栏大小是否: %s", size_text)
+        dock_mode = DockDbus.get_display_mode()        
+        if mode_conf['efficient'] == dock_mode:
+            dock_size = DockDbus.get_window_size_efficient()
+        elif mode_conf['fashion'] == dock_mode:
+            dock_size = DockDbus.get_window_size_fashion()
+        AssertCommon.assert_true(dock_size == size)