The key broke in the lock. What should I do?

1, tweezers can be inserted into the lock hole to clip out the broken key, which is suitable for the case that the key is not completely stuck in the lock core.

2. Put a towel next to the keyhole, tap it with a hammer, shake off the broken key by vibration, and then take it out with pliers.

3. Find a professional locksmith and let him use professional tools for processing, which is safer and more reliable.