1.To eliminate psychosocial stimuli: For example, for patients with anxiety-induced tension headache, psychological support, cognitive therapy, relaxation training or hypnotherapy are used to make cognitive changes and reduce anxiety, so as to eliminate the headache. This belongs to the treatment of symptoms, which is relatively easier. 2.To eliminate psychological causes: For example, for patients with type A personality closely related to coronary heart disease, we should help seven to change the bad cognitive pattern and life environment to reduce psychological stimulation, so as to eliminate psychological factors fundamentally and reverse the psychopathological process of psychological diseases to make them develop in a healthy direction, which belongs to the root of the problem but is more difficult. 3, to eliminate biological symptoms: this is mainly through psychological techniques to directly change the biological process of patients, improve physical quality and promote disease recovery, such as the use of long-term relaxation training or biofeedback therapy to treat hypertensive patients.