1. Manufacturer's after-sales service: If your kettle is newly bought or still under warranty, you can contact the manufacturer's after-sales service department of the kettle and ask if you can provide the service of replacing the kettle body.

2. Online shopping: On some e-commerce platforms or official website, you may find a replacement kettle. You can search your kettle model and add the keyword "change the kettle body" to see if there is a suitable product.

3. Market Accessories Store: Some cities may have professional accessories stores that sell all kinds of household appliances, including kettle bodies. You can try to go to the local appliance market or accessories store and ask if there is a replacement body suitable for your kettle.

No matter which way you choose, it is recommended to check the model and specifications of the kettle before buying to ensure that the purchased kettle body is compatible with your kettle. If you are not sure, you'd better consult a professional or contact the manufacturer for confirmation.