diff --git a/src/infiniop/ops/softmax/bang/softmax_bang.cc b/src/infiniop/ops/softmax/bang/softmax_bang.cc
new file mode 100644
index 000000000..a92916734
--- /dev/null
+++ b/src/infiniop/ops/softmax/bang/softmax_bang.cc
@@ -0,0 +1,96 @@
+#include "softmax_bang.h"
+#include "../../../devices/bang/common_bang.h"
+
+namespace op::softmax::bang {
+
+struct Descriptor::Opaque {
+    std::shared_ptr<device::bang::Handle::Internal> internal;
+    cnnlTensorDescriptor_t x_desc = nullptr;
+    cnnlTensorDescriptor_t y_desc = nullptr;
+
+    ~Opaque() {
+        if (x_desc) {
+            cnnlDestroyTensorDescriptor(x_desc);
+        }
+        if (y_desc) {
+            cnnlDestroyTensorDescriptor(y_desc);
+        }
+    }
+};
+
+Descriptor::~Descriptor() {
+    delete _opaque;
+}
+
+static infiniStatus_t setSoftmaxTensor(cnnlTensorDescriptor_t desc, const SoftmaxInfo &info) {
+    int dims[3] = {
+        static_cast<int>(info.othersize / info.stride),
+        static_cast<int>(info.dimsize),
+        static_cast<int>(info.stride),
+    };
+    CHECK_BANG(cnnlSetTensorDescriptor(
+        desc,
+        CNNL_LAYOUT_ARRAY,
+        device::bang::getCnnlDtype(info.dtype),
+        3,
+        dims));
+    return INFINI_STATUS_SUCCESS;
+}
+
+infiniStatus_t Descriptor::create(
+    infiniopHandle_t handle,
+    Descriptor **desc_ptr,
+    infiniopTensorDescriptor_t y_desc,
+    infiniopTensorDescriptor_t x_desc,
+    int axis) {
+    auto result = SoftmaxInfo::create(y_desc, x_desc, axis);
+    CHECK_RESULT(result);
+    auto info = result.take();
+
+    cnnlTensorDescriptor_t cnnl_x = nullptr;
+    cnnlTensorDescriptor_t cnnl_y = nullptr;
+    CHECK_BANG(cnnlCreateTensorDescriptor(&cnnl_x));
+    CHECK_BANG(cnnlCreateTensorDescriptor(&cnnl_y));
+    CHECK_STATUS(setSoftmaxTensor(cnnl_x, info));
+    CHECK_STATUS(setSoftmaxTensor(cnnl_y, info));
+
+    auto handle_bang = reinterpret_cast<device::bang::Handle *>(handle);
+    *desc_ptr = new Descriptor(
+        new Opaque{handle_bang->internal(), cnnl_x, cnnl_y},
+        std::move(info),
+        0,
+        handle->device,
+        handle->device_id);
+    return INFINI_STATUS_SUCCESS;
+}
+
+infiniStatus_t Descriptor::calculate(
+    void *workspace, size_t workspace_size,
+    void *y,
+    const void *x,
+    void *stream) const {
+    if (workspace_size < _workspace_size) {
+        return INFINI_STATUS_INSUFFICIENT_WORKSPACE;
+    }
+
+    auto queue = reinterpret_cast<cnrtQueue_t>(stream);
+    CHECK_STATUS(_opaque->internal->useCnnl(
+        queue,
+        [&](cnnlHandle_t handle) {
+            CHECK_BANG(cnnlSoftmaxForward(
+                handle,
+                CNNL_SOFTMAX_ACCURATE,
+                CNNL_SOFTMAX_MODE_MEDIUM_DIMENSION,
+                nullptr,
+                _opaque->x_desc,
+                x,
+                nullptr,
+                _opaque->y_desc,
+                y));
+            return INFINI_STATUS_SUCCESS;
+        }));
+    cnrtQueueSync(queue);
+    return INFINI_STATUS_SUCCESS;
+}
+
+} // namespace op::softmax::bang
diff --git a/src/infiniop/ops/softmax/bang/softmax_bang.h b/src/infiniop/ops/softmax/bang/softmax_bang.h
new file mode 100644
index 000000000..5cf909ab5
--- /dev/null
+++ b/src/infiniop/ops/softmax/bang/softmax_bang.h
@@ -0,0 +1,8 @@
+#ifndef __SOFTMAX_BANG_H__
+#define __SOFTMAX_BANG_H__
+
+#include "../softmax.h"
+
+DESCRIPTOR(bang)
+
+#endif // __SOFTMAX_BANG_H__
diff --git a/src/infiniop/ops/softmax/operator.cc b/src/infiniop/ops/softmax/operator.cc
index 54916f121..1664e257f 100644
--- a/src/infiniop/ops/softmax/operator.cc
+++ b/src/infiniop/ops/softmax/operator.cc
@@ -2,6 +2,10 @@
 #include "../../handle.h"
 #include "infiniop/ops/softmax.h"
 
+#ifdef ENABLE_CAMBRICON_API
+#include "bang/softmax_bang.h"
+#endif
+
 #if defined(ENABLE_NVIDIA_API) || defined(ENABLE_ILUVATAR_API) || defined(ENABLE_QY_API) || defined(ENABLE_HYGON_API) || defined(ENABLE_ALI_API)
 #include "nvidia/softmax_nvidia.cuh"
 #endif
@@ -36,6 +40,9 @@ __INFINI_C infiniStatus_t infiniopCreateSoftmaxDescriptor(
 #endif
 #ifdef ENABLE_ALI_API
         CREATE(INFINI_DEVICE_ALI, nvidia);
+#endif
+#ifdef ENABLE_CAMBRICON_API
+        CREATE(INFINI_DEVICE_CAMBRICON, bang);
 #endif
     default:
         return INFINI_STATUS_DEVICE_TYPE_NOT_SUPPORTED;
@@ -64,6 +71,9 @@ __INFINI_C infiniStatus_t infiniopGetSoftmaxWorkspaceSize(infiniopSoftmaxDescrip
 #endif
 #ifdef ENABLE_ALI_API
         GET(INFINI_DEVICE_ALI, nvidia);
+#endif
+#ifdef ENABLE_CAMBRICON_API
+        GET(INFINI_DEVICE_CAMBRICON, bang);
 #endif
     default:
         return INFINI_STATUS_DEVICE_TYPE_NOT_SUPPORTED;
@@ -97,6 +107,9 @@ __INFINI_C infiniStatus_t infiniopSoftmax(
 #endif
 #ifdef ENABLE_ALI_API
         CALCULATE(INFINI_DEVICE_ALI, nvidia);
+#endif
+#ifdef ENABLE_CAMBRICON_API
+        CALCULATE(INFINI_DEVICE_CAMBRICON, bang);
 #endif
     default:
         return INFINI_STATUS_DEVICE_TYPE_NOT_SUPPORTED;
@@ -125,6 +138,9 @@ __INFINI_C infiniStatus_t infiniopDestroySoftmaxDescriptor(infiniopSoftmaxDescri
 #endif
 #ifdef ENABLE_ALI_API
         DESTROY(INFINI_DEVICE_ALI, nvidia);
+#endif
+#ifdef ENABLE_CAMBRICON_API
+        DESTROY(INFINI_DEVICE_CAMBRICON, bang);
 #endif
     default:
         return INFINI_STATUS_DEVICE_TYPE_NOT_SUPPORTED;