diff --git a/csrc/extensions.cpp b/csrc/extensions.cpp
index 8b57071f..23f8fbcb 100644
--- a/csrc/extensions.cpp
+++ b/csrc/extensions.cpp
@@ -17,6 +17,7 @@
 #include <pybind11/cast.h>
 #include <pybind11/detail/common.h>
 
+#include <diopi/functions.h>
 #include <diopi/functions_ext.h>
 
 #include <csrc_dipu/runtime/core/DIPUGeneratorImpl.h>
@@ -26,6 +27,15 @@
 
 namespace dipu::dipu_ext {
 
+void extAdamW(at::Tensor& param, at::Tensor& exp_avg, at::Tensor& exp_avg_sq,
+              at::Tensor& max_exp_avg_sq, at::Tensor& grad, float lr,
+              float beta1, float beta2, float epsilon, float weight_decay,
+              int64_t step, bool amsgrad) {
+  // the diopiAdamW func has no "maximize" param
+  callDiopi(diopiAdamW, param, grad, exp_avg, exp_avg_sq, max_exp_avg_sq, lr,
+            beta1, beta2, epsilon, weight_decay, step, amsgrad);
+}
+
 auto extRmsNorm(at::Tensor& output, at::Tensor& inv_rms,
                 const at::Tensor& input,
                 const OptionalIntArray& normalized_shape,
@@ -217,7 +227,11 @@ auto extRmsNormLightllm(const at::Tensor& x, const at::Tensor& weight,
 //   否则不注册, 等到 python 层处理.
 // NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
 PYBIND11_MODULE(TORCH_EXTENSION_NAME, m) {
-  if (&diopiRMSNorm != nullptr) {  // Check if weak symbol defined
+  // Check if weak symbol defined
+  if (&diopiAdamW != nullptr) {
+    m.def("adamw", &extAdamW, "deeplink ext_adamw");
+  }
+  if (&diopiRMSNorm != nullptr) {
     m.def("rms_norm", &extRmsNorm, "deeplink ext_rms_norm");
   }
   if (&diopiRMSNormBackward != nullptr) {
diff --git a/deeplink_ext/ascend_speed/__init__.py b/deeplink_ext/ascend_speed/__init__.py
index 399f9138..fab32da5 100644
--- a/deeplink_ext/ascend_speed/__init__.py
+++ b/deeplink_ext/ascend_speed/__init__.py
@@ -1,3 +1,4 @@
 from .rotary_embedding import apply_rotary, RotaryEmbedding
+from .adamw import adamw
 
-__all__ = ["apply_rotary", "RotaryEmbedding"]
+__all__ = ["apply_rotary", "RotaryEmbedding", "adamw"]
diff --git a/deeplink_ext/ascend_speed/adamw.py b/deeplink_ext/ascend_speed/adamw.py
new file mode 100644
index 00000000..9133a71a
--- /dev/null
+++ b/deeplink_ext/ascend_speed/adamw.py
@@ -0,0 +1,59 @@
+from typing import List
+import torch
+import deeplink_ext.cpp_extensions as ext
+
+
+assert hasattr(ext, "adamw")
+
+
+def adamw(
+    params: List[torch.Tensor],
+    grads: List[torch.Tensor],
+    exp_avgs: List[torch.Tensor],
+    exp_avg_sqs: List[torch.Tensor],
+    max_exp_avg_sqs: List[torch.Tensor],
+    state_steps: List[int],
+    *,
+    amsgrad: bool,
+    beta1: float,
+    beta2: float,
+    lr: float,
+    weight_decay: float,
+    eps: float,
+    maximize: bool,
+    norm_coeff_scale: float
+):
+    r"""Functional API that performs AdamW algorithm computation.
+    See :class:`~torch.optim.AdamW` for details.
+    """
+
+    assert maximize == False, "ascend diopiAdamW only support False 'maximize'."
+    assert amsgrad == False, "ascend diopiAdamW only support False 'amsgrad'."
+
+    for i, param in enumerate(params):
+        if norm_coeff_scale is not None:
+            grad = grads[i].float() * norm_coeff_scale
+        else:
+            grad = grads[i]
+        exp_avg = exp_avgs[i]
+        exp_avg_sq = exp_avg_sqs[i]
+        step = state_steps[i]
+        if not max_exp_avg_sqs:
+            max_exp_avg_sq = torch.Tensor().cuda()
+        else:
+            max_exp_avg_sq = max_exp_avg_sqs[i]
+        ext.adamw(
+            param,
+            exp_avg,
+            exp_avg_sq,
+            max_exp_avg_sq,
+            grad,
+            lr,
+            beta1,
+            beta2,
+            eps,
+            weight_decay,
+            step,
+            amsgrad,
+        )
+    return params, exp_avgs, exp_avg_sqs