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diff --git a/r_basicsr/archs/edsr_arch.py b/r_basicsr/archs/edsr_arch.py
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+++ b/r_basicsr/archs/edsr_arch.py
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+import torch
+from torch import nn as nn
+
+from r_basicsr.archs.arch_util import ResidualBlockNoBN, Upsample, make_layer
+from r_basicsr.utils.registry import ARCH_REGISTRY
+
+
+@ARCH_REGISTRY.register()
+class EDSR(nn.Module):
+    """EDSR network structure.
+
+    Paper: Enhanced Deep Residual Networks for Single Image Super-Resolution.
+    Ref git repo: https://github.com/thstkdgus35/EDSR-PyTorch
+
+    Args:
+        num_in_ch (int): Channel number of inputs.
+        num_out_ch (int): Channel number of outputs.
+        num_feat (int): Channel number of intermediate features.
+            Default: 64.
+        num_block (int): Block number in the trunk network. Default: 16.
+        upscale (int): Upsampling factor. Support 2^n and 3.
+            Default: 4.
+        res_scale (float): Used to scale the residual in residual block.
+            Default: 1.
+        img_range (float): Image range. Default: 255.
+        rgb_mean (tuple[float]): Image mean in RGB orders.
+            Default: (0.4488, 0.4371, 0.4040), calculated from DIV2K dataset.
+    """
+
+    def __init__(self,
+                 num_in_ch,
+                 num_out_ch,
+                 num_feat=64,
+                 num_block=16,
+                 upscale=4,
+                 res_scale=1,
+                 img_range=255.,
+                 rgb_mean=(0.4488, 0.4371, 0.4040)):
+        super(EDSR, self).__init__()
+
+        self.img_range = img_range
+        self.mean = torch.Tensor(rgb_mean).view(1, 3, 1, 1)
+
+        self.conv_first = nn.Conv2d(num_in_ch, num_feat, 3, 1, 1)
+        self.body = make_layer(ResidualBlockNoBN, num_block, num_feat=num_feat, res_scale=res_scale, pytorch_init=True)
+        self.conv_after_body = nn.Conv2d(num_feat, num_feat, 3, 1, 1)
+        self.upsample = Upsample(upscale, num_feat)
+        self.conv_last = nn.Conv2d(num_feat, num_out_ch, 3, 1, 1)
+
+    def forward(self, x):
+        self.mean = self.mean.type_as(x)
+
+        x = (x - self.mean) * self.img_range
+        x = self.conv_first(x)
+        res = self.conv_after_body(self.body(x))
+        res += x
+
+        x = self.conv_last(self.upsample(res))
+        x = x / self.img_range + self.mean
+
+        return x