Use hot water or steam, use oils, use dish soap, and use chemical cleaners.

1. Use hot water or steam: Soak the label in hot water or steam for a period of time, and then slowly scrape off the label with your thumb or scraper.

2. Use oil substances: Pour some cooking oil, vegetable oil or olive oil on the label, let the oil penetrate into the label glue, and then slowly scrape off the label.

3. Use dishwashing liquid: Apply the dishwashing liquid on the label, let it penetrate into the label glue, and rinse it under the faucet.

4. Use chemical cleaners: There are some chemical cleaners on the market specifically designed to remove label glue, which can be used according to the instructions.