By exploring that hand washing can reduce the number of bacteria and fungi on hands, we can get the enlightenment that frequent hand washing can reduce the number of bacteria and fungi on hands and is beneficial to health. According to the experimental data, hand washing can reduce the number of bacteria and fungi on hands, which is an important means to reduce bacterial infection. It is of great educational significance to explore that hand washing can reduce bacteria and fungi on hands and make people deeply understand the significance of hand washing.