diff --git a/diffsynth/core/vram/layers.py b/diffsynth/core/vram/layers.py
index 01ade0e..751792d 100644
--- a/diffsynth/core/vram/layers.py
+++ b/diffsynth/core/vram/layers.py
@@ -63,7 +63,8 @@ class AutoTorchModule(torch.nn.Module):
         return r
 
     def check_free_vram(self):
-        gpu_mem_state = getattr(torch, self.computation_device_type).mem_get_info(self.computation_device)
+        device = self.computation_device if self.computation_device != "npu" else "npu:0"
+        gpu_mem_state = getattr(torch, self.computation_device_type).mem_get_info(device)
         used_memory = (gpu_mem_state[1] - gpu_mem_state[0]) / (1024**3)
         return used_memory < self.vram_limit
 
@@ -309,6 +310,7 @@ class AutoWrappedLinear(torch.nn.Linear, AutoTorchModule):
         self.lora_B_weights = []
         self.lora_merger = None
         self.enable_fp8 = computation_dtype in [torch.float8_e4m3fn, torch.float8_e4m3fnuz]
+        self.computation_device_type = parse_device_type(self.computation_device)
         
         if offload_dtype == "disk":
             self.disk_map = disk_map
diff --git a/diffsynth/diffusion/base_pipeline.py b/diffsynth/diffusion/base_pipeline.py
index 0140497..fa355a1 100644
--- a/diffsynth/diffusion/base_pipeline.py
+++ b/diffsynth/diffusion/base_pipeline.py
@@ -177,7 +177,8 @@ class BasePipeline(torch.nn.Module):
 
         
     def get_vram(self):
-        return getattr(torch, self.device_type).mem_get_info(self.device)[1] / (1024 ** 3)
+        device = self.device if self.device != "npu" else "npu:0"
+        return getattr(torch, self.device_type).mem_get_info(device)[1] / (1024 ** 3)
     
     def get_module(self, model, name):
         if "." in name:
diff --git a/docs/en/Pipeline_Usage/GPU_support.md b/docs/en/Pipeline_Usage/GPU_support.md
index 2f206eb..789d26a 100644
--- a/docs/en/Pipeline_Usage/GPU_support.md
+++ b/docs/en/Pipeline_Usage/GPU_support.md
@@ -46,7 +46,7 @@ pipe = WanVideoPipeline.from_pretrained(
     ],
     tokenizer_config=ModelConfig(model_id="Wan-AI/Wan2.1-T2V-1.3B", origin_file_pattern="google/umt5-xxl/"),
 -   vram_limit=torch.cuda.mem_get_info("cuda")[1] / (1024 ** 3) - 2,
-+   vram_limit=torch.npu.mem_get_info("npu")[1] / (1024 ** 3) - 2,
++   vram_limit=torch.npu.mem_get_info("npu:0")[1] / (1024 ** 3) - 2,
 )
 
 video = pipe(
diff --git a/docs/zh/Pipeline_Usage/GPU_support.md b/docs/zh/Pipeline_Usage/GPU_support.md
index 3ba76fc..56d78f7 100644
--- a/docs/zh/Pipeline_Usage/GPU_support.md
+++ b/docs/zh/Pipeline_Usage/GPU_support.md
@@ -46,7 +46,7 @@ pipe = WanVideoPipeline.from_pretrained(
     ],
     tokenizer_config=ModelConfig(model_id="Wan-AI/Wan2.1-T2V-1.3B", origin_file_pattern="google/umt5-xxl/"),
 -   vram_limit=torch.cuda.mem_get_info("cuda")[1] / (1024 ** 3) - 2,
-+   vram_limit=torch.npu.mem_get_info("npu")[1] / (1024 ** 3) - 2,
++   vram_limit=torch.npu.mem_get_info("npu:0")[1] / (1024 ** 3) - 2,
 )
 
 video = pipe(