1. Demonstration: First of all, parents should set an example, wash their hands frequently and tell their children why they should wash their hands.

2. Games: Children can be taught to wash their hands by playing games, such as letting children imitate the scene of doctors or nurses washing their hands.

3. Reward: If the child washes his hands successfully, he can give some small rewards, such as praise and small gifts.

4. Create an environment: set up facilities such as a sink and soap at home to make it easy for children to wash their hands.

5. Explain knowledge: explain to children the importance of hand washing and the correct methods of hand washing, so that children know how to protect themselves and others.

6. Supervision: Before children start washing their hands independently, it is necessary to supervise their washing process to ensure that they wash their hands correctly.