Catering waiters in high-end restaurants and star-rated hotels are not allowed to wear rings, but they can wear earrings but not too big.

The reasons why catering waiters can't wear rings are as follows:

1. Wearing a ring service will not accidentally hook the hair or clothes of the guests when serving them.

2. Wearing a ring service ring is made of metal. When it comes into contact with some dishes, it will have a chemical reaction, which may cause food safety.

3. Inadvertently wearing a ring to serve dishes will bring hidden dangers to good service. Room attendants can wear rings to work, but many waiters will take them off at work for convenience, and catering waiters must never wear them at work.