diff --git a/lib/PTO/Transforms/VPTOCANN900LLVMEmitter.cpp b/lib/PTO/Transforms/VPTOCANN900LLVMEmitter.cpp
index b64e459783..2c60df94b9 100644
--- a/lib/PTO/Transforms/VPTOCANN900LLVMEmitter.cpp
+++ b/lib/PTO/Transforms/VPTOCANN900LLVMEmitter.cpp
@@ -2410,8 +2410,16 @@ static FailureOr<StringRef> buildPstuCallee(MLIRContext *context, pto::PstuOp op
   return failure();
 }
 
-static StringRef buildVstusCallee(MLIRContext *context) {
-  return StringAttr::get(context, "llvm.hivm.vstus").getValue();
+static FailureOr<StringRef> buildVstusCallee(MLIRContext *context,
+                                              Type valueType) {
+  std::string vec =
+      getMemoryElementTypeFragment(getElementTypeFromVectorLike(valueType));
+  auto lanes = getElementCountFromVectorLike(valueType);
+  if (vec.empty() || !lanes)
+    return failure();
+  return StringAttr::get(context, "llvm.hivm.vstus.v" +
+                                      std::to_string(*lanes) + vec)
+      .getValue();
 }
 
 static FailureOr<StringRef> buildVstusPostCallee(MLIRContext *context,
@@ -7512,7 +7520,8 @@ class LowerVstusOpPattern final : public OpConversionPattern<pto::VstusOp> {
                                          "unexpected converted vstus operand/result types");
     }
 
-    FailureOr<StringRef> calleeName = buildVstusCallee(op.getContext());
+    FailureOr<StringRef> calleeName =
+        buildVstusCallee(op.getContext(), op.getValue().getType());
     if (usePostIntrinsic)
       calleeName =
           buildVstusPostCallee(op.getContext(), op.getValue().getType());
diff --git a/lib/PTO/Transforms/VPTOLLVMEmitter.cpp b/lib/PTO/Transforms/VPTOLLVMEmitter.cpp
index 32250a089f..81a3ac9bd7 100644
--- a/lib/PTO/Transforms/VPTOLLVMEmitter.cpp
+++ b/lib/PTO/Transforms/VPTOLLVMEmitter.cpp
@@ -2438,8 +2438,16 @@ static FailureOr<StringRef> buildPstuCallee(MLIRContext *context, pto::PstuOp op
   return failure();
 }
 
-static StringRef buildVstusCallee(MLIRContext *context) {
-  return StringAttr::get(context, "llvm.hivm.vstus").getValue();
+static FailureOr<StringRef> buildVstusCallee(MLIRContext *context,
+                                              Type valueType) {
+  std::string vec =
+      getMemoryElementTypeFragment(getElementTypeFromVectorLike(valueType));
+  auto lanes = getElementCountFromVectorLike(valueType);
+  if (vec.empty() || !lanes)
+    return failure();
+  return StringAttr::get(context, "llvm.hivm.vstus.v" +
+                                      std::to_string(*lanes) + vec)
+      .getValue();
 }
 
 static FailureOr<StringRef> buildVstusPostCallee(MLIRContext *context,
@@ -8111,7 +8119,8 @@ class LowerVstusOpPattern final : public OpConversionPattern<pto::VstusOp> {
                                          "unexpected converted vstus operand/result types");
     }
 
-    FailureOr<StringRef> calleeName = buildVstusCallee(op.getContext());
+    FailureOr<StringRef> calleeName =
+        buildVstusCallee(op.getContext(), op.getValue().getType());
     if (usePostIntrinsic)
       calleeName =
           buildVstusPostCallee(op.getContext(), op.getValue().getType());
diff --git a/test/lit/vpto/vreg_low_precision_memory_vpto_llvm.pto b/test/lit/vpto/vreg_low_precision_memory_vpto_llvm.pto
index 37ba0cbb21..d89f1c2cbe 100644
--- a/test/lit/vpto/vreg_low_precision_memory_vpto_llvm.pto
+++ b/test/lit/vpto/vreg_low_precision_memory_vpto_llvm.pto
@@ -95,7 +95,8 @@ module attributes {pto.target_arch = "a5", pto.kernel_kind = #pto.kernel_kind<ve
 // CHECK: call <32 x i8> @llvm.hivm.vldas
 // CANN: call { <256 x i8>, <32 x i8>, ptr addrspace(6) } @llvm.hivm.vldus.v256s8
 // BETA: call { <256 x i8>, <32 x i8>, ptr addrspace(6) } @llvm.hivm.vldus.v256hif8
-// CHECK: call <32 x i8> @llvm.hivm.vstus
+// CANN: call <32 x i8> @llvm.hivm.vstus.v256s8
+// BETA: call <32 x i8> @llvm.hivm.vstus.v256hif8
 // CHECK: call <32 x i8> @llvm.hivm.vstur
 // CHECK: call void @llvm.hivm.vstar
 
diff --git a/test/lit/vpto/vstus_mixed_types_vpto_llvm.pto b/test/lit/vpto/vstus_mixed_types_vpto_llvm.pto
new file mode 100644
index 0000000000..e74b5ba425
--- /dev/null
+++ b/test/lit/vpto/vstus_mixed_types_vpto_llvm.pto
@@ -0,0 +1,37 @@
+// Copyright (c) 2026 Huawei Technologies Co., Ltd.
+// This program is free software; you can redistribute it and/or modify it under the terms of
+// the CANN Open Software License Agreement Version 2.0 (the "License").
+// Please refer to the License for the specific language governing permissions and limitations under the License.
+
+// Keep vstus callees type-specific so different element types can coexist in
+// one kernel without conflicting LLVM declarations.
+// RUN: ptoas --pto-arch=a5 --pto-backend=vpto --emit-vpto-llvm-ir %s -o - 2>&1 | FileCheck %s --check-prefix=DEFAULT
+// RUN: ptoas --cann-output-version=9.0.0 --pto-arch=a5 --pto-backend=vpto --emit-vpto-llvm-ir %s -o - 2>&1 | FileCheck %s --check-prefix=CANN900
+
+module attributes {pto.target_arch = "a5", pto.kernel_kind = #pto.kernel_kind<vector>} {
+  func.func @vstus_mixed_types(%f32_dst: !pto.ptr<f32, ub>,
+                               %u8_dst: !pto.ptr<ui8, ub>,
+                               %f32_value: !pto.vreg<64xf32>,
+                               %u8_value: !pto.vreg<256xui8>) attributes {pto.kernel} {
+    %c0_i32 = arith.constant 0 : i32
+    pto.vecscope {
+      %f32_align = pto.init_align : !pto.align
+      %f32_align_out = pto.vstus %f32_align, %c0_i32, %f32_value, %f32_dst :
+        !pto.align, i32, !pto.vreg<64xf32>, !pto.ptr<f32, ub> -> !pto.align
+      pto.vstas %f32_align_out, %f32_dst, %c0_i32 : !pto.align, !pto.ptr<f32, ub>, i32
+      %u8_align = pto.init_align : !pto.align
+      %u8_align_out = pto.vstus %u8_align, %c0_i32, %u8_value, %u8_dst :
+        !pto.align, i32, !pto.vreg<256xui8>, !pto.ptr<ui8, ub> -> !pto.align
+      pto.vstas %u8_align_out, %u8_dst, %c0_i32 : !pto.align, !pto.ptr<ui8, ub>, i32
+    }
+    return
+  }
+}
+
+// DEFAULT-LABEL: define void @vstus_mixed_types_mix_aiv
+// DEFAULT: call <32 x i8> @llvm.hivm.vstus.v64f32
+// DEFAULT: call <32 x i8> @llvm.hivm.vstus.v256i8
+
+// CANN900-LABEL: define void @vstus_mixed_types_mix_aiv
+// CANN900: call <32 x i8> @llvm.hivm.vstus.v64f32
+// CANN900: call <32 x i8> @llvm.hivm.vstus.v256i8