diff --git a/doc/fluid/api/io.rst b/doc/fluid/api/io.rst
index be9478c30e1ee7406d6706db6d9109e1b44a9111..00514a979eae7cb338ac70a095f2d4654441f092 100644
--- a/doc/fluid/api/io.rst
+++ b/doc/fluid/api/io.rst
@@ -7,6 +7,9 @@ fluid.io
 
     io/batch.rst
     io/BatchSampler.rst
+    io/Sampler.rst
+    io/SequenceSampler.rst
+    io/RandomSampler.rst
     io/buffered.rst
     io/cache.rst
     io/chain.rst
diff --git a/doc/fluid/api/io/RandomSampler.rst b/doc/fluid/api/io/RandomSampler.rst
new file mode 100644
index 0000000000000000000000000000000000000000..a905037f8285d9c4e21a3b2bdd7a904acd61452a
--- /dev/null
+++ b/doc/fluid/api/io/RandomSampler.rst
@@ -0,0 +1,10 @@
+.. _api_io_RandomSampler:
+
+RandomSampler
+-------------------------------
+..  autoclass:: paddle.fluid.io.RandomSampler
+    :members:
+    :inherited-members:
+    :noindex:
+
+
diff --git a/doc/fluid/api/io/Sampler.rst b/doc/fluid/api/io/Sampler.rst
new file mode 100644
index 0000000000000000000000000000000000000000..6e700bd218356d10eed538a9ee0114738e3f3c02
--- /dev/null
+++ b/doc/fluid/api/io/Sampler.rst
@@ -0,0 +1,10 @@
+.. _api_io_Sampler:
+
+Sampler
+-------------------------------
+..  autoclass:: paddle.fluid.io.Sampler
+    :members:
+    :inherited-members:
+    :noindex:
+
+
diff --git a/doc/fluid/api/io/SequenceSampler.rst b/doc/fluid/api/io/SequenceSampler.rst
new file mode 100644
index 0000000000000000000000000000000000000000..d79aeab766e49d0c916d9068cc6aa6e8d9c7b740
--- /dev/null
+++ b/doc/fluid/api/io/SequenceSampler.rst
@@ -0,0 +1,10 @@
+.. _api_io_SequenceSampler:
+
+SequenceSampler
+-------------------------------
+..  autoclass:: paddle.fluid.io.SequenceSampler
+    :members:
+    :inherited-members:
+    :noindex:
+
+