As the oral psychosomatic diseases of infants appear connected with a predisposition of their environment, environmental adjustment and psychotherapy on the basis of psychosomatic dentistry are necessary in the treatment. We encountered a 9-year-old boy who seemed to be suffering from a facial tic caused by psychological factors. An attempt of therapy on the basis of psychosomatic dentistry was made in this case. The results as follows were obtained: 1. Intake interview to a mother was carried out regarding a cause of the tic. It was shown that the attitude of the mother will bring up the child and her meddling as well as the stress of school life caused his facial tic. 2. With our guidance, the mother reconsidered her meddling attitude toward the patient. And she was able to handle the patient with a kind attitude. 3. After play therapy as preparation, catharsis was carried out on the patient, the tic decreased rapidly. 4. Finally a token economy method was used. 5. It was thought that sufficient correspondence on the basis of psychosomatic dentistry was beneficial in the therapy of patient with psychosomatic disease in pedodontics.