diff --git a/source/advanced/grad_manager.rst b/source/advanced/grad_manager.rst
new file mode 100644
index 0000000..fa9cb7f
--- /dev/null
+++ b/source/advanced/grad_manager.rst
@@ -0,0 +1,5 @@
+.. _grad_manager:
+
+求导器详解
+==============================
+