1. Use special detergent for washing machine: add the water with special detergent for washing machine according to the normal water level of washing machine, run the washing machine according to the normal washing mode, stop the washing for about 20 minutes, and continue to run the washing machine for 30 minutes after soaking for two hours, then drain and dry; 2. Use detergent for cleaning: open the detergent adding box of the washing machine, add the mixed detergent solution, run the washing machine, discharge the detergent from the drainage pipe half an hour later, and then add the discharged detergent into the detergent adding box again, repeat this for many times, and finally rinse with clean water to dry; 3. Use hydrogen peroxide for cleaning: add water to the high water level of the washing machine, soak for about two hours, then add two bottles of hydrogen peroxide and an appropriate amount of washing powder, and clean it according to the normal washing process.