diff --git a/src/index.tsx b/src/index.tsx
index 017aebc..d1797f5 100644
--- a/src/index.tsx
+++ b/src/index.tsx
@@ -248,19 +248,32 @@ const Segmented = React.forwardRef<HTMLDivElement, SegmentedProps>(
       const nextOption = validOptions[nextIndex];
 
       if (nextOption && nextOption.value !== rawValue) {
+        const optionIndex = segmentedOptions.indexOf(nextOption);
+        containerRef.current
+          ?.querySelectorAll<HTMLInputElement>(`input.${prefixCls}-item-input`)
+          [optionIndex]?.focus();
         setRawValue(nextOption.value);
         onChange?.(nextOption.value);
       }
     };
 
     const handleKeyDown = (event: React.KeyboardEvent) => {
+      const isRtl = direction === 'rtl';
       switch (event.key) {
         case 'ArrowLeft':
+          event.preventDefault();
+          onOffset(isRtl ? 1 : -1);
+          break;
+        case 'ArrowRight':
+          event.preventDefault();
+          onOffset(isRtl ? -1 : 1);
+          break;
         case 'ArrowUp':
+          event.preventDefault();
           onOffset(-1);
           break;
-        case 'ArrowRight':
         case 'ArrowDown':
+          event.preventDefault();
           onOffset(1);
           break;
       }
diff --git a/tests/index.test.tsx b/tests/index.test.tsx
index a686201..8165dde 100644
--- a/tests/index.test.tsx
+++ b/tests/index.test.tsx
@@ -719,6 +719,35 @@ describe('Segmented keyboard navigation', () => {
     expect(onChange).toHaveBeenCalledWith('Web');
   });
 
+  it('should handle arrow navigation in RTL mode and prevent default', async () => {
+    const user = userEvent.setup();
+    const onChange = jest.fn();
+    const { getAllByRole } = render(
+      <Segmented
+        name="platform"
+        direction="rtl"
+        options={['iOS', 'Android', 'Web']}
+        onChange={onChange}
+      />,
+    );
+
+    await user.tab();
+    await user.tab();
+
+    // In RTL, ArrowRight moves to previous item
+    await user.keyboard('{ArrowRight}');
+    expect(onChange).toHaveBeenCalledWith('Web');
+
+    expect(getAllByRole('radio')[2]).toHaveFocus();
+
+    onChange.mockClear();
+
+    // In RTL, ArrowLeft moves to next item
+    await user.keyboard('{ArrowLeft}');
+    expect(onChange).toHaveBeenCalledWith('iOS');
+    expect(getAllByRole('radio')[0]).toHaveFocus();
+  });
+
   it('should skip Tab navigation when disabled', async () => {
     const user = userEvent.setup();
     const { container } = render(