diff --git a/docs/guides/model_convert/convert_from_pytorch/api_difference/nn/torch.nn.Module.get_buffer.md b/docs/guides/model_convert/convert_from_pytorch/api_difference/nn/torch.nn.Module.get_buffer.md
new file mode 100644
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+++ b/docs/guides/model_convert/convert_from_pytorch/api_difference/nn/torch.nn.Module.get_buffer.md
@@ -0,0 +1,19 @@
+## [组合替代实现]torch.nn.Module.get_buffer
+
+### [torch.nn.Module.get_buffer](https://pytorch.org/docs/stable/generated/torch.nn.Module.html#torch.nn.Module.get_buffer)
+
+```python
+torch.nn.Module.get_buffer(target)
+```
+
+Paddle 无此 API，需要组合实现。
+
+### 转写示例
+
+```python
+# Pytorch 写法
+module.get_buffer("target")
+
+# Paddle 写法
+getattr(module, "target")
+```
diff --git a/docs/guides/model_convert/convert_from_pytorch/api_difference/nn/torch.nn.Module.get_parameter.md b/docs/guides/model_convert/convert_from_pytorch/api_difference/nn/torch.nn.Module.get_parameter.md
new file mode 100644
index 00000000000..61afd8e883f
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+++ b/docs/guides/model_convert/convert_from_pytorch/api_difference/nn/torch.nn.Module.get_parameter.md
@@ -0,0 +1,19 @@
+## [组合替代实现]torch.nn.Module.get_parameter
+
+### [torch.nn.Module.get_parameter](https://pytorch.org/docs/stable/generated/torch.nn.Module.html#torch.nn.Module.get_parameter)
+
+```python
+torch.nn.Module.get_parameter(target)
+```
+
+Paddle 无此 API，需要组合实现。
+
+### 转写示例
+
+```python
+# Pytorch 写法
+module.get_parameter("target")
+
+# Paddle 写法
+getattr(module, "target")
+```
diff --git a/docs/guides/model_convert/convert_from_pytorch/api_difference/nn/torch.nn.Module.get_submodule.md b/docs/guides/model_convert/convert_from_pytorch/api_difference/nn/torch.nn.Module.get_submodule.md
new file mode 100644
index 00000000000..ff379fae01a
--- /dev/null
+++ b/docs/guides/model_convert/convert_from_pytorch/api_difference/nn/torch.nn.Module.get_submodule.md
@@ -0,0 +1,19 @@
+## [组合替代实现]torch.nn.Module.get_submodule
+
+### [torch.nn.Module.get_submodule](https://pytorch.org/docs/stable/generated/torch.nn.Module.html#torch.nn.Module.get_submodule)
+
+```python
+torch.nn.Module.get_submodule(target)
+```
+
+Paddle 无此 API，需要组合实现。
+
+### 转写示例
+
+```python
+# Pytorch 写法
+module.get_submodule("target")
+
+# Paddle 写法
+getattr(module, "target")
+```
diff --git a/docs/guides/model_convert/convert_from_pytorch/api_difference/nn/torch.nn.Module.register_parameter.md b/docs/guides/model_convert/convert_from_pytorch/api_difference/nn/torch.nn.Module.register_parameter.md
new file mode 100644
index 00000000000..3b4bee98567
--- /dev/null
+++ b/docs/guides/model_convert/convert_from_pytorch/api_difference/nn/torch.nn.Module.register_parameter.md
@@ -0,0 +1,22 @@
+## [仅参数名不一致]torch.nn.Module.register_parameter
+
+### [torch.nn.Module.register_parameter](https://pytorch.org/docs/stable/generated/torch.nn.Module.html#torch.nn.Module.register_parameter)
+
+```python
+torch.nn.Module.register_parameter(name, param)
+```
+
+### [paddle.nn.Layer.add_parameter](https://www.paddlepaddle.org.cn/documentation/docs/zh/develop/api/paddle/nn/Layer_cn.html#add-parameter-name-parameter)
+
+```python
+paddle.nn.Layer.add_parameter(name, parameter)
+```
+
+两者功能一致，仅参数名不一致，具体如下：
+
+### 参数映射
+
+| PyTorch | PaddlePaddle | 备注                             |
+| ------- | ------------ | -------------------------------- |
+| name    | name         | 参数名。                         |
+| param   | parameter    | Parameter 实例，仅参数名不一致。 |