Solution: The plastic ring needs to be replaced. Replacement method of rubber ring of drum washing machine: 1. Open the door of the washing machine, take out the sealing ring of the door from the steel wire buckle in the gap with a flat screwdriver, remove the sealing ring and push it into the inner barrel. 2. Loosen the bolt of the door sealing ring clamp. 3. Pull outward and remove the door sealing ring from the outer cylinder. After replacing the door sealing ring, turn down the three water leakage holes and tighten the bolts. Daily maintenance method of washing machine: 1. When washing clothes with the washing machine, the sundries in the clothes pockets should be cleaned up. If you encounter clothes with metal buttons, turn them over and wash them to avoid damaging the inner barrel of the washing machine when washing. Affect the service life of the washing machine. 2. When washing clothes with a washing machine, the temperature should not be too high, and 40 degrees is appropriate. Otherwise, it will burn out the washing tub or make the plastic inside the washing tub deform, age and damage the internal parts. 3. After the washing machine is finally used, use detergent to clean the interlayer and filter screen of the washing machine, and don't shelter evil people from evil. Then dry the shell and display board of the washing machine with a dry towel, and open the cover to dry.