diff --git a/docs/readthedocs/source/doc/UserGuide/python.md b/docs/readthedocs/source/doc/UserGuide/python.md
index f287dc51..34b568c5 100644
--- a/docs/readthedocs/source/doc/UserGuide/python.md
+++ b/docs/readthedocs/source/doc/UserGuide/python.md
@@ -1,6 +1,8 @@
 # Python User Guide
 
 ---
+Supported Platforms: Linux and macOS.   _**Note:** Windows is currently not supported._
+ 
 ### **1. Install**
 - We recommend using [conda](https://docs.conda.io/projects/conda/en/latest/user-guide/install/) to prepare the Python environment as follows:
 
diff --git a/docs/readthedocs/source/doc/UserGuide/scala.md b/docs/readthedocs/source/doc/UserGuide/scala.md
index 42700664..6023f0e8 100644
--- a/docs/readthedocs/source/doc/UserGuide/scala.md
+++ b/docs/readthedocs/source/doc/UserGuide/scala.md
@@ -1,7 +1,8 @@
 # Scala User Guide
 
 ---
-
+Supported Platforms: Linux and macOS. _**Note:** Windows is currently not supported._
+ 
 ### **1. Try BigDL Examples**
 This section will show you how to download BigDL prebuild packages and run the build-in examples.