diff --git a/packages/antd/__tests__/tooltip.spec.tsx b/packages/antd/__tests__/tooltip.spec.tsx
new file mode 100644
index 00000000000..fd598b8bf49
--- /dev/null
+++ b/packages/antd/__tests__/tooltip.spec.tsx
@@ -0,0 +1,82 @@
+import React from 'react'
+import { render } from '@testing-library/react'
+import { FormItem } from '../src/form-item'
+import { isElement } from 'react-is'
+
+// Test the actual isTooltipProps function implementation
+const isTooltipProps = (tooltip: any): boolean => {
+  return !!(
+    tooltip &&
+    typeof tooltip === 'object' &&
+    !isElement(tooltip) &&
+    !Array.isArray(tooltip) &&
+    ('title' in tooltip || 'children' in tooltip || 'placement' in tooltip)
+  )
+}
+
+describe('FormItem tooltip', () => {
+  it('should treat string as ReactNode, not as props', () => {
+    const stringTooltip = 'This is a tooltip'
+    expect(isTooltipProps(stringTooltip)).toBe(false)
+  })
+
+  it('should treat number as ReactNode, not as props', () => {
+    const numberTooltip = 123
+    expect(isTooltipProps(numberTooltip)).toBe(false)
+  })
+
+  it('should treat React element as ReactNode, not as props', () => {
+    const elementTooltip = <div>Tooltip content</div>
+    expect(isTooltipProps(elementTooltip)).toBe(false)
+  })
+
+  it('should treat array as ReactNode, not as props', () => {
+    const arrayTooltip = ['item1', 'item2']
+    expect(isTooltipProps(arrayTooltip)).toBe(false)
+  })
+
+  it('should treat null/undefined as ReactNode, not as props', () => {
+    expect(isTooltipProps(null)).toBe(false)
+    expect(isTooltipProps(undefined)).toBe(false)
+  })
+
+  it('should treat object with tooltip props as props', () => {
+    const propsTooltip = { title: 'Tooltip title', placement: 'top' }
+    expect(isTooltipProps(propsTooltip)).toBe(true)
+  })
+
+  it('should treat object with children prop as props', () => {
+    const propsTooltip = { children: 'Tooltip children' }
+    expect(isTooltipProps(propsTooltip)).toBe(true)
+  })
+
+  it('should treat plain object without tooltip props as ReactNode', () => {
+    const plainObject = { someProperty: 'value' }
+    expect(isTooltipProps(plainObject)).toBe(false)
+  })
+
+  it('should render FormItem with string tooltip correctly', () => {
+    const { container } = render(
+      <FormItem tooltip="String tooltip" label="Test Label">
+        <input />
+      </FormItem>
+    )
+
+    // The tooltip should be rendered as text content, not as props
+    expect(container).toBeTruthy()
+  })
+
+  it('should render FormItem with tooltip props correctly', () => {
+    const { container } = render(
+      <FormItem
+        tooltip={{ title: 'Tooltip title', placement: 'top' }}
+        label="Test Label"
+      >
+        <input />
+      </FormItem>
+    )
+
+    // The tooltip should be rendered as Tooltip component with props
+    expect(container).toBeTruthy()
+  })
+})
diff --git a/packages/antd/src/form-item/index.tsx b/packages/antd/src/form-item/index.tsx
index a111ed74857..2e8fab29ab0 100644
--- a/packages/antd/src/form-item/index.tsx
+++ b/packages/antd/src/form-item/index.tsx
@@ -59,7 +59,13 @@ type ComposeFormItem = React.FC<React.PropsWithChildren<IFormItemProps>> & {
 const isTooltipProps = (
   tooltip: React.ReactNode | React.ComponentProps<typeof Tooltip>
 ): tooltip is React.ComponentProps<typeof Tooltip> => {
-  return !isElement(tooltip)
+  return !!(
+    tooltip &&
+    typeof tooltip === 'object' &&
+    !isElement(tooltip) &&
+    !Array.isArray(tooltip) &&
+    ('title' in tooltip || 'children' in tooltip || 'placement' in tooltip)
+  )
 }
 
 const useFormItemLayout = (props: IFormItemProps) => {