diff --git a/packages/components/select/__tests__/select.test.ts b/packages/components/select/__tests__/select.test.ts
index 5c398dd8ae..4677499b7a 100644
--- a/packages/components/select/__tests__/select.test.ts
+++ b/packages/components/select/__tests__/select.test.ts
@@ -382,6 +382,8 @@ describe('Select', () => {
   })
 
   test('the scenario of rendering label when there is a default value and persistent is false', async () => {
+    // This is convenient for testing the default value label rendering when persistent is false.
+    process.env.RUN_TEST_WITH_PERSISTENT = 'true'
     wrapper = _mount(
       `
       <el-select v-model="value" :persistent="false">
@@ -410,9 +412,12 @@ describe('Select', () => {
     await nextTick()
 
     expect(wrapper.find(`.${PLACEHOLDER_CLASS_NAME}`).text()).toBe('双皮奶')
+    delete process.env.RUN_TEST_WITH_PERSISTENT
   })
 
   test('when there is a default value and persistent is false, render the label and dynamically modify options', async () => {
+    // This is convenient for testing the default value label rendering when persistent is false.
+    process.env.RUN_TEST_WITH_PERSISTENT = 'true'
     wrapper = _mount(
       `
       <el-select v-model="value" :persistent="false">
@@ -444,9 +449,12 @@ describe('Select', () => {
     await nextTick()
 
     expect(wrapper.find(`.${PLACEHOLDER_CLASS_NAME}`).text()).toBe('双皮奶')
+    delete process.env.RUN_TEST_WITH_PERSISTENT
   })
 
   test('multiple is true and persistent is false', async () => {
+    // This is convenient for testing the default value label rendering when persistent is false.
+    process.env.RUN_TEST_WITH_PERSISTENT = 'true'
     wrapper = _mount(
       `
       <el-select v-model="value" :persistent="false" multiple>
@@ -477,6 +485,7 @@ describe('Select', () => {
     const tags = wrapper.findAll(`.${TAG_NAME}`)
     expect(tags.length).toBe(1)
     expect(tags[0].text()).toBe('双皮奶')
+    delete process.env.RUN_TEST_WITH_PERSISTENT
   })
 
   test('multiple is true and persistent is false, render the label and dynamically modify options', async () => {
@@ -1382,7 +1391,7 @@ describe('Select', () => {
 
   test('multiple select with collapseTagsTooltip', async () => {
     // This is convenient for testing the default value label rendering when persistent is false.
-    process.env.RUN_TEST_WITH_PERSISTENT = true
+    process.env.RUN_TEST_WITH_PERSISTENT = 'true'
 
     wrapper = _mount(
       `
diff --git a/packages/components/select/src/select.vue b/packages/components/select/src/select.vue
index 64220e3034..b272ec9cf6 100644
--- a/packages/components/select/src/select.vue
+++ b/packages/components/select/src/select.vue
@@ -300,7 +300,7 @@
 </template>
 
 <script lang="ts">
-import { Fragment, computed, defineComponent, h, nextTick, provide, reactive, toRefs, watchEffect } from 'vue'
+import { computed, defineComponent, getCurrentInstance, provide, reactive, toRefs, watch } from 'vue'
 import { ClickOutside } from '@element-plus/directives'
 import ElTooltip from '@element-plus/components/tooltip'
 import ElScrollbar from '@element-plus/components/scrollbar'
@@ -316,7 +316,7 @@ import { selectKey } from './token'
 import ElOptions from './options'
 import { selectProps } from './select'
 
-import type { VNode, VNodeNormalizedChildren } from 'vue';
+import type { VNode } from 'vue';
 import type { SelectContext } from './type'
 
 const COMPONENT_NAME = 'ElSelect'
@@ -346,6 +346,16 @@ export default defineComponent({
   ],
 
   setup(props, { emit, slots }) {
+    const instance = getCurrentInstance()!
+    instance.appContext.config.warnHandler = (...args) => {
+      // Overrides warnings about slots not being executable outside of a render function.
+      // We call slot below just to simulate data when persist is false, this warning message should be ignored
+      if (!args[0] || args[0].includes('Slot "default" invoked outside of the render function')) {
+        return
+      }
+      // eslint-disable-next-line no-console
+      console.warn(...args)
+    }
     const modelValue = computed(() => {
       const { modelValue: rawModelValue, multiple } = props
       const fallback = multiple ? [] : undefined
@@ -366,27 +376,54 @@ export default defineComponent({
     const API = useSelect(_props, emit)
     const { calculatorRef, inputStyle } = useCalcInputWidth()
 
-    const manuallyRenderSlots = (vnodes: VNodeNormalizedChildren) => {
+    const flatTreeSelectData = (data: any[]) => {
+      return data.reduce((acc, item) => {
+        acc.push(item)
+        if (item.children && item.children.length > 0) {
+          acc.push(...flatTreeSelectData(item.children))
+        }
+        return acc
+      }, [])
+    }
+
+    const manuallyRenderSlots = (vnodes: VNode[] | undefined) => {
       // After option rendering is completed, the useSelect internal state can collect the value of each option.
       // If the persistent value is false, option will not be rendered by default, so in this case,
       // manually render and load option data here.
-      const children = flattedChildren(vnodes) as VNode[]
-      children.filter((item) => {
+      const children = flattedChildren(vnodes || []) as VNode[]
+      children.forEach((item) => {
         // @ts-expect-error
-        return isObject(item) && item!.type.name === 'ElOption'
-      }).forEach(item => {
-        const obj = { ...item.props } as any
-        obj.currentLabel = obj.label || (isObject(obj.value) ? '' : obj.value)
-        API.onOptionCreate(obj)
+        if (isObject(item) && (item.type.name === 'ElOption' || item.type.name === 'ElTree')) {
+          // @ts-expect-error
+          const _name = item.type.name
+          if (_name === 'ElTree') {
+            // tree-select component is a special case.
+            // So we need to handle it separately.
+            const treeData = item.props?.data || []
+            const flatData = flatTreeSelectData(treeData)
+            flatData.forEach((treeItem: any) => {
+              treeItem.currentLabel = treeItem.label || (isObject(treeItem.value) ? '' : treeItem.value)
+              API.onOptionCreate(treeItem)
+            })
+          } else if (_name === 'ElOption') {
+            const obj = { ...item.props } as any
+            obj.currentLabel = obj.label || (isObject(obj.value) ? '' : obj.value)
+            API.onOptionCreate(obj)
+          }
+        }
       })
     }
-    watchEffect(() => {
-      if (!props.persistent) {
-        nextTick(() => {
-          const defaultSlots = h(Fragment, slots.default?.() ?? []).children
-          manuallyRenderSlots(defaultSlots)
-        })
+    watch(() => {
+      const slotsContent = slots.default?.()
+      return slotsContent
+    }, newSlot => {
+      if (props.persistent) {
+        // If persistent is true, we don't need to manually render slots.
+        return
       }
+      manuallyRenderSlots(newSlot)
+    }, {
+      immediate: true,
     })
 
     provide(
diff --git a/packages/components/tree-select/__tests__/tree-select.test.tsx b/packages/components/tree-select/__tests__/tree-select.test.tsx
index 0c900943d3..cff6a08353 100644
--- a/packages/components/tree-select/__tests__/tree-select.test.tsx
+++ b/packages/components/tree-select/__tests__/tree-select.test.tsx
@@ -99,6 +99,24 @@ describe('TreeSelect.vue', () => {
     expect(tree.findAll('.el-tree .el-tree-node').length).toBe(1)
   })
 
+  test('render tree-select with default value and persistent is false', async () => {
+    // This is convenient for testing the default value label rendering when persistent is false.
+    process.env.RUN_TEST_WITH_PERSISTENT = 'true'
+    const { select, wrapper } = createComponent({
+      props: {
+        persistent: false,
+        modelValue: 1,
+      },
+    })
+
+    await nextTick()
+
+    expect(select.vm.modelValue).toBe(1)
+    expect(select.vm.states.selectedLabel).toBe('一级 1')
+    expect(wrapper.find('.el-select__placeholder').text()).toBe('一级 1')
+    delete process.env.RUN_TEST_WITH_PERSISTENT
+  })
+
   test('render tree-select with dynamic class', async () => {
     const isClass = ref(false)
     const { wrapper } = createComponent({
diff --git a/packages/locale/lang/ru.ts b/packages/locale/lang/ru.ts
index b377642fef..1a723f5f62 100644
--- a/packages/locale/lang/ru.ts
+++ b/packages/locale/lang/ru.ts
@@ -5,7 +5,7 @@ export default {
       label: 'Хлебные крошки',
     },
     colorpicker: {
-      confirm: 'подтверждать',
+      confirm: 'Ок',
       clear: 'Очистить',
     },
     datepicker: {
@@ -13,7 +13,7 @@ export default {
       today: 'Сегодня',
       cancel: 'Отмена',
       clear: 'Очистить',
-      confirm: 'подтверждать',
+      confirm: 'Ок',
       selectDate: 'Выбрать дату',
       selectTime: 'Выбрать время',
       startDate: 'Дата начала',
@@ -91,7 +91,7 @@ export default {
     },
     messagebox: {
       title: 'Сообщение',
-      confirm: 'подтверждать',
+      confirm: 'Ок',
       cancel: 'Отмена',
       error: 'Недопустимый ввод данных',
     },
@@ -103,7 +103,7 @@ export default {
     },
     table: {
       emptyText: 'Нет данных',
-      confirmFilter: 'Подтвердить',
+      confirmFilter: 'Ок',
       resetFilter: 'Сбросить',
       clearFilter: 'Все',
       sumText: 'Сумма',
@@ -131,7 +131,7 @@ export default {
       title: 'Назад',
     },
     popconfirm: {
-      confirmButtonText: 'подтверждать',
+      confirmButtonText: 'Ок',
       cancelButtonText: 'Отмена',
     },
     carousel: {
diff --git a/typings/env.d.ts b/typings/env.d.ts
index 53e638ce1e..aa605e1c91 100644
--- a/typings/env.d.ts
+++ b/typings/env.d.ts
@@ -5,7 +5,7 @@ declare global {
   const process: {
     env: {
       NODE_ENV: string
-      RUN_TEST_WITH_PERSISTENT: boolean
+      RUN_TEST_WITH_PERSISTENT: string
     }
   }