diff --git a/packages/ui/src/components/variable/VariableEditor.vue b/packages/ui/src/components/variable/VariableEditor.vue
index 3ad36a56..3e7237e3 100644
--- a/packages/ui/src/components/variable/VariableEditor.vue
+++ b/packages/ui/src/components/variable/VariableEditor.vue
@@ -102,6 +102,10 @@ import {
     type FormInst,
     type FormRules,
 } from "naive-ui";
+import {
+    PREDEFINED_VARIABLES,
+    getVariableNameValidationError,
+} from "../../types/variable";
 
 const { t } = useI18n();
 
@@ -164,7 +168,8 @@ const formRules: FormRules = {
         },
         {
             validator: (_rule: unknown, value: string) => {
-                if (value && !/^[a-zA-Z_][a-zA-Z0-9_]*$/.test(value.trim())) {
+                const name = value?.trim();
+                if (name && getVariableNameValidationError(name)) {
                     return new Error(t("variables.editor.errors.nameInvalid"));
                 }
             },
@@ -172,16 +177,12 @@ const formRules: FormRules = {
         },
         {
             validator: (_rule: unknown, value: string) => {
-                const predefinedNames = [
-                    "originalPrompt",
-                    "lastOptimizedPrompt",
-                    "iterateInput",
-                    "currentPrompt",
-                    "userQuestion",
-                    "conversationContext",
-                    "toolsContext",
-                ];
-                if (value && predefinedNames.includes(value.trim())) {
+                if (
+                    value &&
+                    PREDEFINED_VARIABLES.includes(
+                        value.trim() as typeof PREDEFINED_VARIABLES[number],
+                    )
+                ) {
                     return new Error(
                         t("variables.editor.errors.namePredefined"),
                     );
diff --git a/packages/ui/src/components/variable/VariableManagerModal.vue b/packages/ui/src/components/variable/VariableManagerModal.vue
index 9af6ceca..f81c4fd1 100644
--- a/packages/ui/src/components/variable/VariableManagerModal.vue
+++ b/packages/ui/src/components/variable/VariableManagerModal.vue
@@ -369,7 +369,7 @@ import { useConfirmDialog } from "../../composables/ui/useConfirmDialog";
 import type {
     VariableManagerModalProps,
 } from "../../types/components";
-import type { VariableSource } from "../../types/variable";
+import { isValidVariableName, type VariableSource } from "../../types/variable";
 import type { VariableManagerHooks } from '../../composables/prompt/useVariableManager';
 import type { VariableExportData, VariableImportOptions } from '@prompt-optimizer/core';
 import VariableEditor from "./VariableEditor.vue";
@@ -825,8 +825,7 @@ const cancelInlineEdit = () => {
 // 快速添加功能
 const quickAddVariable = async () => {
     if (!props.variableManager?.variableManager.value) return;
-    if (!quickAddForm.value.name.trim() || !quickAddForm.value.value.trim())
-        return;
+    if (!canQuickAdd.value) return;
 
     try {
         loading.value = true;
@@ -859,8 +858,8 @@ const canQuickAdd = computed(() => {
 
     if (!name || !value) return false;
 
-    // 验证变量名格式
-    if (!/^[a-zA-Z][a-zA-Z0-9_]*$/.test(name)) return false;
+    // Reuse the shared variable-name contract used by workspaces and storage.
+    if (!isValidVariableName(name)) return false;
 
     // 检查是否与预定义变量重名（标准化）
     if (
diff --git a/packages/ui/tests/unit/components/VariableEditor.spec.ts b/packages/ui/tests/unit/components/VariableEditor.spec.ts
new file mode 100644
index 00000000..959b5646
--- /dev/null
+++ b/packages/ui/tests/unit/components/VariableEditor.spec.ts
@@ -0,0 +1,71 @@
+import { describe, expect, it } from 'vitest'
+import { mount } from '@vue/test-utils'
+import VariableEditor from '../../../src/components/variable/VariableEditor.vue'
+
+const stubs = {
+  NModal: {
+    name: 'NModal',
+    template: '<div><slot /><slot name="footer" /></div>',
+    props: ['show', 'title', 'preset', 'style', 'maskClosable']
+  },
+  NForm: {
+    name: 'NForm',
+    template: '<form><slot /></form>',
+    props: ['model', 'rules']
+  },
+  NFormItem: {
+    name: 'NFormItem',
+    template: '<div><slot /><slot name="feedback" /></div>',
+    props: ['path', 'label', 'required']
+  },
+  NInput: {
+    name: 'NInput',
+    template: '<input :value="value" @input="$emit(\'update:value\', ($event.target as HTMLInputElement).value)" />',
+    props: ['value', 'placeholder', 'disabled', 'clearable', 'type', 'autosize'],
+    emits: ['update:value']
+  },
+  NButton: {
+    name: 'NButton',
+    template: '<button :disabled="disabled" @click="$emit(\'click\')"><slot /></button>',
+    props: ['type', 'disabled', 'loading'],
+    emits: ['click']
+  },
+  NSpace: {
+    name: 'NSpace',
+    template: '<div><slot /></div>',
+    props: ['justify']
+  },
+  NText: {
+    name: 'NText',
+    template: '<span><slot /></span>',
+    props: ['depth']
+  }
+}
+
+const mountEditor = () => mount(VariableEditor, {
+  props: {
+    show: true,
+    existingNames: []
+  },
+  global: {
+    stubs
+  }
+})
+
+describe('VariableEditor', () => {
+  it('uses the shared variable-name contract so Chinese names are valid', () => {
+    const wrapper = mountEditor()
+    const nameRules = (wrapper.vm as any).formRules.name
+
+    expect(nameRules[1].validator({}, '中文变量')).toBeUndefined()
+    expect(nameRules[1].validator({}, 'foo bar')).toBeInstanceOf(Error)
+    expect(nameRules[1].validator({}, '1name')).toBeInstanceOf(Error)
+  })
+
+  it('keeps predefined variable names blocked', () => {
+    const wrapper = mountEditor()
+    const nameRules = (wrapper.vm as any).formRules.name
+
+    expect(nameRules[2].validator({}, 'originalPrompt')).toBeInstanceOf(Error)
+  })
+})
diff --git a/packages/ui/tests/unit/components/VariableManagerModal.spec.ts b/packages/ui/tests/unit/components/VariableManagerModal.spec.ts
new file mode 100644
index 00000000..3d0d7e13
--- /dev/null
+++ b/packages/ui/tests/unit/components/VariableManagerModal.spec.ts
@@ -0,0 +1,71 @@
+import { describe, expect, it, vi } from 'vitest'
+import { shallowMount } from '@vue/test-utils'
+import { ref } from 'vue'
+import VariableManagerModal from '../../../src/components/variable/VariableManagerModal.vue'
+
+const createVariableManager = () => {
+  const addVariable = vi.fn()
+  const variables: Record<string, string> = {}
+  const manager = {
+    resolveAllVariables: () => ({ ...variables }),
+    getVariableSource: (name: string) => name === 'originalPrompt' ? 'predefined' : 'custom',
+    isPredefinedVariable: (name: string) => name === 'originalPrompt'
+  }
+
+  return {
+    addVariable,
+    hook: {
+      variableManager: ref(manager),
+      addVariable: (name: string, value: string) => {
+        variables[name] = value
+        addVariable(name, value)
+      }
+    }
+  }
+}
+
+describe('VariableManagerModal', () => {
+  it('allows Chinese variable names in quick add', async () => {
+    const { hook, addVariable } = createVariableManager()
+    const wrapper = shallowMount(VariableManagerModal, {
+      props: {
+        visible: true,
+        variableManager: hook as any
+      }
+    })
+
+    ;(wrapper.vm as any).quickAddForm = {
+      name: '中文变量',
+      value: '测试值'
+    }
+
+    expect((wrapper.vm as any).canQuickAdd).toBe(true)
+
+    await (wrapper.vm as any).quickAddVariable()
+
+    expect(addVariable).toHaveBeenCalledWith('中文变量', '测试值')
+    expect(wrapper.emitted('variableChange')?.[0]).toEqual(['中文变量', '测试值', 'add'])
+  })
+
+  it('blocks invalid and predefined names in quick add', () => {
+    const { hook } = createVariableManager()
+    const wrapper = shallowMount(VariableManagerModal, {
+      props: {
+        visible: true,
+        variableManager: hook as any
+      }
+    })
+
+    ;(wrapper.vm as any).quickAddForm = {
+      name: 'foo bar',
+      value: 'value'
+    }
+    expect((wrapper.vm as any).canQuickAdd).toBe(false)
+
+    ;(wrapper.vm as any).quickAddForm = {
+      name: 'originalPrompt',
+      value: 'value'
+    }
+    expect((wrapper.vm as any).canQuickAdd).toBe(false)
+  })
+})