In the comprehensive treatment of anxiety disorders, combined with systematic desensitization training, it has been clinically proven that it can achieve the relief of neurotic anxiety or terror, thus promoting the improvement of social function, and has a good effect on the early recovery of anxiety disorder patients. Systemic desensitization therapy is one of the common methods of psychotherapy for anxiety disorders. The main way is that when the patient is in a state of general relaxation, the doctor makes the stimulus that can cause weak anxiety appear repeatedly in front of him/her, and when it reaches the point where it cannot cause anxiety, the intensity of the stimulus is increased as usual until the patient’s anxiety disappears completely. The principle of systematic desensitization therapy: the state of muscle relaxation and the state of anxiety or fear in humans and animals is an antagonistic process, and the appearance of one state is bound to inhibit the other. For example, in a state of general muscle relaxation, various physiological and biochemical indicators, such as respiration, heart rhythm, blood pressure, electromyography, dermatography and other physiological response indicators, will show the exact opposite of the anxiety or fear state, based on this principle, the development of systemic desensitization therapy, a psychotherapy for anxiety disorders. The method of systematic desensitization therapy consists of three parts: muscle relaxation; anxiety gradient scale; and pairing anxiety scenarios with muscle relaxation by means of imagination. In practical application, first set a grade for your degree of emotional distress; then learn various methods of relaxation; then perform relaxation training from low to high according to different anxiety grades, imagine the scenario that is least likely to produce tension, and achieve desensitization through the process of relaxation until the anxiety is relieved. In turn, we move toward higher levels of anxiety and gradually adapt to the scenarios caused by anxiety.