Children love biting nails may be simply bad habits or other diseases and other reasons, long-term may have some harm to children, such as affecting their own image, cause gastrointestinal diseases, cause obsessive-compulsive disorder, anxiety and other psychological disorders. 1. Impact on their own image: children biting nails is easy to gradually form bad habits of behavior, it is likely to continue, in the long run, it is difficult to stop, it will have a negative impact on the child’s image, and even grow up may have a negative impact on the daily work and interpersonal relationships. 2. cause gastrointestinal diseases: because the hands have to contact many objects every day, love nail biting behavior is easy to let bacteria, viruses from the oral cavity into the body, is likely to cause gastrointestinal diseases. 3. cause obsessive-compulsive disorder, anxiety and other psychological disorders: children love biting nails if they have formed a long-term bad habits, always unable to self-control, in the long run, may cause irritability, anxiety and other bad emotions, may even induce obsessive-compulsive disorder, anxiety and other psychological disorders. As you can see, nail biting is more harmful to children, therefore, parents should stop it in time. If necessary, you need to consult a doctor as soon as possible to clarify the causes of nail biting, and the doctor will guide the targeted treatment and conditioning.