diff --git a/docs/en/conf.py b/docs/en/conf.py
index 796fa42fc..26c77274e 100644
--- a/docs/en/conf.py
+++ b/docs/en/conf.py
@@ -21,7 +21,7 @@
 
 sys.path.insert(0, str(HPM_SDK_BASE / "docs" / "_ext"))
 
-
+os.environ["HPM_SDK_BASE"] = str(HPM_SDK_BASE)
 project = 'HPMicro Software Development Kit'
 copyright = '2020-2023, HPMicro'
 author = 'HPMicro Software Team'
diff --git a/docs/zh/conf.py b/docs/zh/conf.py
index 973852c07..081b911a7 100644
--- a/docs/zh/conf.py
+++ b/docs/zh/conf.py
@@ -21,6 +21,7 @@
 
 sys.path.insert(0, str(HPM_SDK_BASE / "docs" / "_ext"))
 
+os.environ["HPM_SDK_BASE"] = str(HPM_SDK_BASE)
 project = 'HPMico Software Development Kit'
 copyright = '2020-2023, HPMicro'
 author = '先楫半导体软件组'