diff --git a/tutorials/source_zh_cn/dataset/python_objects.ipynb b/tutorials/source_zh_cn/dataset/python_objects.ipynb
index 6556addcc7bfb698b845e0b9bbb8094cba4d7d05..8b9f359e51543622ba51f6f53fe65a51e71a66fe 100644
--- a/tutorials/source_zh_cn/dataset/python_objects.ipynb
+++ b/tutorials/source_zh_cn/dataset/python_objects.ipynb
@@ -339,7 +339,7 @@
     "def dict_to_tuple(d):\n",
     "    return tuple([i for i in d.values()])\n",
     "\n",
-    "# flatten the dict object bedfore it passed into network\n",
+    "# flatten the dict object before it passed into network\n",
     "data = data.map(dict_to_tuple, input_columns=['col1'], output_columns=['my_data', 'my_data2'])\n",
     "\n",
     "print('>>> get data in sequence type')\n",
diff --git a/tutorials/source_zh_cn/dataset/sampler.ipynb b/tutorials/source_zh_cn/dataset/sampler.ipynb
index d0142c6d1bd5b434805eb91f677ad83841594d09..c9246f1e64f97fc8bcf675d6ca6f2bc073dbdc5f 100644
--- a/tutorials/source_zh_cn/dataset/sampler.ipynb
+++ b/tutorials/source_zh_cn/dataset/sampler.ipynb
@@ -224,7 +224,7 @@
     "train_dataset = MnistDataset(\"MNIST_Data/train\", shuffle=False)\n",
     "print(type(train_dataset))\n",
     "\n",
-    "# visialize dataset content\n",
+    "# visualize dataset content\n",
     "figure = plt.figure(figsize=(4, 4))\n",
     "cols, rows = 3, 3\n",
     "\n",