The buckle structure of embedded ceiling lamp is complicated, so it can't be disassembled by brute force. You can carefully observe the situation around the buckle. It's stuck in the spring clip. Press it and break it gently to replace the light bulb. Remember to reinstall the cover after replacement.
2, round ceiling lamp when replacing lamps, it is best to turn off the power supply at home, so that there is no danger of electric shock when replacing lamps.
When replacing, you can use a screwdriver to remove the fixing screws around the circular sucker. These small screws are used to fix the outer iron ring of the lampshade. Then, you can remove the damaged light bulb by rotating the circular sucker, that is, the lampshade, install the same type of light bulb, and finally install the lampshade.