From 661fe3062c91a0f2f1dea73994f0189e04e4e9b0 Mon Sep 17 00:00:00 2001
From: gfwm0502 <63550764+gfwm0502@users.noreply.github.com>
Date: Fri, 5 Jun 2020 10:24:07 +0800
Subject: [PATCH] Modify documents of flags in advanced_guide (#2179) (#2189)

test=develop
As the title
---
 doc/fluid/advanced_guide/flags/flags_cn.rst | 13 ++++++++++++-
 doc/fluid/advanced_guide/flags/flags_en.rst | 11 +++++++++++
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/doc/fluid/advanced_guide/flags/flags_cn.rst b/doc/fluid/advanced_guide/flags/flags_cn.rst
index 6968eaddc..5d0d41472 100644
--- a/doc/fluid/advanced_guide/flags/flags_cn.rst
+++ b/doc/fluid/advanced_guide/flags/flags_cn.rst
@@ -2,11 +2,22 @@
 环境变量FLAGS
 ==================
 
+调用说明
+----------
+
+PaddlePaddle中的环境变量FLAGS支持两种设置方式。
+
+- 通过export来设置环境变量，如 :code:`export FLAGS_eager_delete_tensor_gb = 1.0` 。
+
+- 通过API：:code:`get_flag` 和 :code:`set_flags` 来打印和设置环境变量FLAGS。API使用详情请参考 :ref:`cn_api_fluid_get_flags` 与 :ref:`cn_api_fluid_set_flags` 。
+
+
+环境变量FLAGS功能分类
+----------------------
 
 ..  toctree::
     :maxdepth: 1
 
-
     cudnn_cn.rst
     data_cn.rst
     debug_cn.rst
diff --git a/doc/fluid/advanced_guide/flags/flags_en.rst b/doc/fluid/advanced_guide/flags/flags_en.rst
index 247c38f16..b24c551c7 100644
--- a/doc/fluid/advanced_guide/flags/flags_en.rst
+++ b/doc/fluid/advanced_guide/flags/flags_en.rst
@@ -2,6 +2,17 @@
 FLAGS
 ==================
 
+Usage
+------
+These FLAGS in PaddlePaddle can be set in two ways.
+
+- Set the FLAGS through export. For example: :code:`export FLAGS_eager_delete_tensor_gb = 1.0` .
+
+- Through :code:`get_flags` and :code:`set_flags` to print and set the environment variables. For more information of using these API, please refer to :ref:`api_fluid_get_flags` and :ref:`api_fluid_get_flags` .
+
+
+FLAGS Quick Search
+------------------
 
 ..  toctree::
     :maxdepth: 1
-- 
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