1, fine salt method: wet the clothes with blueberry juice, sprinkle some fine salt and rub it repeatedly, and then wash it with soapy water. If you can't clean it once, you can wash it several times.

2. Ammonia method: When clothes are stained with blueberry juice for a long time, ammonia water and clean water can be mixed and diluted according to the ratio of 1: 20, and the parts of clothes stained with blueberry juice are soaked in ammonia water diluent, and washed with soap after 10 minutes.

3, soda water method: pour a proper amount of soda water on the part of the clothes stained with blueberry juice, wait a few minutes and wash it with soap.