The problem of repeated hand washing should be considered for the following reasons: 1, there are certain character defects, such as particularly strong, particularly nervous, easy to worry about their own dirty problems, will repeatedly wash their hands, particularly clean, and even has reached the degree of cleanliness. This may be a problem of character, or even a problem of compulsive personality. 2, the problem of obsessive-compulsive disorder, obsessive-compulsive disorder will easily appear repeatedly check, repeatedly worry, repeatedly worry, repeatedly wash their hands and so on. Especially if you know that these behaviors are unnecessary, but you can’t control them. If you want to fight this problem of repeated hand washing, it can also cause anxiety, tension, irritability and other negative emotions. Once the repeated hand washing is done, these negative emotions will be relieved. 3, it may be a bad habit, especially for the behavior rules are more stereotypical understanding, so there will be very, very stereotypical behavior. This may be related to their own childhood experiences, such as parents are more demanding, requiring them to wash their hands many times over, and after growing up is a passive habit to do so. All of the above reasons need to be actively adjusted.