It is currently believed that psychotherapy for patients with depressive disorders, panic disorder, and generalized anxiety disorder can have the following effects: 1) reduce and alleviate depressive or anxiety symptoms caused by psychosocial stressors; 2) improve compliance with medication in patients receiving medication; 3) correct various adverse psychosocial consequences secondary to psychological disorders, such as marital discord, low self-esteem and despair, and withdrawal and avoidance; 4) maximize the recovery of psychosocial and occupational functions; 5) prevent relapse of psychological disorders in collaboration with medication maintenance treatment. ④ Maximize the rehabilitation of psychosocial and occupational functions of patients; ⑤ Cooperate with drug maintenance treatment to prevent the relapse of psychological disorders. Psychotherapy refers to the process of establishing an interpersonal relationship between a client and a qualified psychotherapist. During the process, both parties need to negotiate and jointly develop a plan to improve the client’s inappropriate perceptions, attitudes, emotions, behaviors or environment, and implement the plan in steps. In other words, the common feature of psychotherapy is an interactive process in which a specific professional uses a variety of psychological methods and techniques to influence the client’s thinking, attitudes, emotions, and behaviors toward health. The most basic technique requires the psychotherapist to establish verbal communication with the patient. 2. Principles of psychotherapy When choosing a single psychotherapy for patients with mild psychological disorders, it is recommended to adopt the following general principles: ① The goal of psychotherapy should focus on the current problem, with the elimination of current symptoms as the main goal; ② When developing a treatment plan, the preferred goal is not to change and reshape personality; ③ It should generally be limited in time; ④ If the patient’s treatment effect is incomplete, further assessment of symptoms can also help ⑤ If depression or anxiety symptoms do not improve after 6 weeks of treatment or if symptom relief is not complete after 12 weeks of treatment, re-evaluation and switching or combination of medication should be considered. There are many types of psychotherapy available for patients with psychological disorders, and the main ones are: supportive psychotherapy, kinetic psychotherapy, cognitive therapy, behavioral therapy, interpersonal psychotherapy, marriage and family therapy. In general, supportive psychotherapy can be applied to all patients, and can be used or combined with all kinds of psychological disorders; psychodynamic short course psychotherapy can be used to treat certain subcategories of psychological disorders, and should be selected for adaptation; cognitive behavioral therapy can correct patients’ cognitive bias, reduce emotional symptoms, improve behavioral coping skills, and reduce relapse of patients with psychological disorders; interpersonal Psychotherapy mainly deals with the interpersonal problems of patients with psychological disorders and improves their social adaptation ability; marriage or family therapy can improve the relationship between couples and families of patients with psychological disorders in recovery and reduce the influence of poor family environment on relapse of the disease.