diff --git a/mmaction/models/backbones/resnet3d.py b/mmaction/models/backbones/resnet3d.py
index 063b21d959..2f0eea8d72 100644
--- a/mmaction/models/backbones/resnet3d.py
+++ b/mmaction/models/backbones/resnet3d.py
@@ -362,7 +362,7 @@ class ResNet3d(nn.Module):
             not freezing any parameters. Default: -1.
         inflate (Sequence[int]): Inflate Dims of each block.
             Default: (1, 1, 1, 1).
-        inflate_style (str): ``3x1x1`` or ``1x1x1``. which determines the
+        inflate_style (str): ``3x1x1`` or ``3x3x3``. which determines the
             kernel sizes and padding strides for conv1 and conv2 in each block.
             Default: '3x1x1'.
         conv_cfg (dict): Config for conv layers. required keys are ``type``
@@ -544,7 +544,7 @@ def make_res_layer(block,
                 Default: ``pytorch``.
             inflate (int | Sequence[int]): Determine whether to inflate
                 for each block. Default: 1.
-            inflate_style (str): ``3x1x1`` or ``1x1x1``. which determines
+            inflate_style (str): ``3x1x1`` or ``3x3x3``. which determines
                 the kernel sizes and padding strides for conv1 and conv2
                 in each block. Default: '3x1x1'.
             non_local (int | Sequence[int]): Determine whether to apply
@@ -879,7 +879,7 @@ class ResNet3dLayer(nn.Module):
             the first 1x1 conv layer. Default: 'pytorch'.
         all_frozen (bool): Frozen all modules in the layer. Default: False.
         inflate (int): Inflate Dims of each block. Default: 1.
-        inflate_style (str): ``3x1x1`` or ``1x1x1``. which determines the
+        inflate_style (str): ``3x1x1`` or ``3x3x3``. which determines the
             kernel sizes and padding strides for conv1 and conv2 in each block.
             Default: '3x1x1'.
         conv_cfg (dict): Config for conv layers. required keys are ``type``
diff --git a/mmaction/models/backbones/resnet3d_csn.py b/mmaction/models/backbones/resnet3d_csn.py
index 4539dec01e..5d041d5450 100644
--- a/mmaction/models/backbones/resnet3d_csn.py
+++ b/mmaction/models/backbones/resnet3d_csn.py
@@ -84,7 +84,7 @@ class ResNet3dCSN(ResNet3d):
         norm_cfg (dict): Config for norm layers. required keys are `type` and
             `requires_grad`.
             Default: dict(type='BN3d', requires_grad=True, eps=1e-3).
-        inflate_style (str): `3x1x1` or `1x1x1`. which determines the kernel
+        inflate_style (str): `3x1x1` or `3x3x3`. which determines the kernel
             sizes and padding strides for conv1 and conv2 in each block.
             Default: '3x3x3'.
         bottleneck_mode (str): Determine which ways to factorize a 3D
diff --git a/mmaction/models/backbones/resnet3d_slowfast.py b/mmaction/models/backbones/resnet3d_slowfast.py
index 45e9d5a7da..be1ea1a2b2 100644
--- a/mmaction/models/backbones/resnet3d_slowfast.py
+++ b/mmaction/models/backbones/resnet3d_slowfast.py
@@ -120,7 +120,7 @@ def make_res_layer(self,
                 Default: ``pytorch``.
             inflate (int | Sequence[int]): Determine whether to inflate
                 for each block. Default: 1.
-            inflate_style (str): ``3x1x1`` or ``1x1x1``. which determines
+            inflate_style (str): ``3x1x1`` or ``3x3x3``. which determines
                 the kernel sizes and padding strides for conv1 and
                 conv2 in each block. Default: ``3x1x1``.
             non_local (int | Sequence[int]): Determine whether to apply