diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 0000000..5c26f48
--- /dev/null
+++ b/tests/__init__.py
@@ -0,0 +1,7 @@
+"""
+测试包根目录。
+
+让 `tests.*` 模块可以被正常 import（例如给 `unilabos` 下的测试入口使用）。
+"""
+
+
diff --git a/tests/devices/__init__.py b/tests/devices/__init__.py
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/tests/devices/__init__.py
@@ -0,0 +1 @@
+
diff --git a/tests/devices/liquid_handling/__init__.py b/tests/devices/liquid_handling/__init__.py
new file mode 100644
index 0000000..b16b30e
--- /dev/null
+++ b/tests/devices/liquid_handling/__init__.py
@@ -0,0 +1,5 @@
+"""
+液体处理设备相关测试。
+"""
+
+
diff --git a/test/devices/liquid_handling/test_transfer_liquid.py b/tests/devices/liquid_handling/test_transfer_liquid.py
similarity index 100%
rename from test/devices/liquid_handling/test_transfer_liquid.py
rename to tests/devices/liquid_handling/test_transfer_liquid.py
diff --git a/tests/ros/msgs/test_runner.py b/tests/ros/msgs/test_runner.py
index fe4cb09..02d352d 100644
--- a/tests/ros/msgs/test_runner.py
+++ b/tests/ros/msgs/test_runner.py
@@ -11,10 +11,10 @@ import os
 # 添加项目根目录到路径
 sys.path.append(os.path.dirname(os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))))
 
-# 导入测试模块
-from test.ros.msgs.test_basic import TestBasicFunctionality
-from test.ros.msgs.test_conversion import TestBasicConversion, TestMappingConversion
-from test.ros.msgs.test_mapping import TestTypeMapping, TestFieldMapping
+# 导入测试模块（统一从 tests 包获取）
+from tests.ros.msgs.test_basic import TestBasicFunctionality
+from tests.ros.msgs.test_conversion import TestBasicConversion, TestMappingConversion
+from tests.ros.msgs.test_mapping import TestTypeMapping, TestFieldMapping
 
 
 def run_tests():
diff --git a/unilabos/devices/liquid_handling/test_transfer_liquid.py b/unilabos/devices/liquid_handling/test_transfer_liquid.py
index 5d50f0a..f13980f 100644
--- a/unilabos/devices/liquid_handling/test_transfer_liquid.py
+++ b/unilabos/devices/liquid_handling/test_transfer_liquid.py
@@ -4,10 +4,10 @@
 `transfer_liquid` 的测试。
 
 实际测试用例实现放在仓库标准测试目录：
-`test/devices/liquid_handling/test_transfer_liquid.py`
+`tests/devices/liquid_handling/test_transfer_liquid.py`
 """
 
 # 让 pytest 能从这里发现同一套测试（避免复制两份测试代码）。
-from test.devices.liquid_handling.test_transfer_liquid import *  # noqa: F401,F403
+from tests.devices.liquid_handling.test_transfer_liquid import *  # noqa: F401,F403