1. First of all, you can try to repair it yourself. For specific methods, you can check the product manual or search related information online. If you are not sure how to repair, you can contact the after-sales service center or professional maintenance personnel for maintenance.

2. During the warranty period, you can contact the after-sales service center for warranty or replacement.

3. The product has passed the warranty period. You can contact professional maintenance personnel for maintenance, or buy a new child lock for replacement. Some home maintenance service providers can also provide related services.

None of the above methods can solve the problem. Buy a new electric kettle to ensure safe and reliable use.