Article in English: Inspect the wheel for screws. Use a screwdriver to take out any screws securing the wheel. If the screws are undamaged, set them aside—although your replacement wheel likely came with screws, you can use them if needed. Once you've unscrewed the luggage, the only thing keeping the wheel to the luggage should be a small metal clip attached to a bolt on either side. Pull out the clip and bolts, setting them aside next to the screws. The clip should be located in the center of the wheel. Take the old wheel out and dispose of it. Place the new wheel into the wheel well and test its placement. If it feels secure, you can screw the wheel into the luggage.  The wheel well is the hole left by the old wheel after you remove it. If the wheel feels too tight or loose, you may have chosen the wrong wheel size. Put the bolts on both sides of the wheel and slide the clip through to secure them. Use your screwdriver to tighten any screws back in place. Test the new wheel by rolling the luggage back and forth—if it glides smoothly, you have replaced the wheel correctly. If the wheel feels wobbly, try tightening the screws. You may have chosen the wrong wheel size if it still feels wobbly or does not move.

Summary in Chinese:
松开固定轮子的螺丝。 把固定轮子的轮夹抽出来。 取下旧轮子，换上新轮子。 将轮子夹紧并用螺丝固定在行李箱上。