diff --git a/doc/design/images/parallel_executor_overview.dot b/doc/fluid/design/concepts/images/parallel_executor_overview.dot
similarity index 100%
rename from doc/design/images/parallel_executor_overview.dot
rename to doc/fluid/design/concepts/images/parallel_executor_overview.dot
diff --git a/doc/design/images/parallel_executor_overview.png b/doc/fluid/design/concepts/images/parallel_executor_overview.png
similarity index 100%
rename from doc/design/images/parallel_executor_overview.png
rename to doc/fluid/design/concepts/images/parallel_executor_overview.png
diff --git a/doc/fluid/design/concepts/index_cn.rst b/doc/fluid/design/concepts/index_cn.rst
index eec8a2f14ca9e8b3bf0d0acbbb6004972790d795..dcdc894937ff328e6002623275ca3c65e87b2bb0 100644
--- a/doc/fluid/design/concepts/index_cn.rst
+++ b/doc/fluid/design/concepts/index_cn.rst
@@ -16,3 +16,4 @@
   block.md
   scope.md
   executor.md
+  parallel_executor.md
diff --git a/doc/fluid/design/concepts/index_en.rst b/doc/fluid/design/concepts/index_en.rst
index 036e1da2550cf520f5c40ecd9657f71603755adc..b85a3055746facaa642e8fc899976b58435f1ef2 100644
--- a/doc/fluid/design/concepts/index_en.rst
+++ b/doc/fluid/design/concepts/index_en.rst
@@ -16,3 +16,4 @@ Core Concepts
   block.md
   scope.md
   executor.md
+  parallel_executor.md
diff --git a/doc/design/parallel_executor.md b/doc/fluid/design/concepts/parallel_executor.md
similarity index 100%
rename from doc/design/parallel_executor.md
rename to doc/fluid/design/concepts/parallel_executor.md