In addition to the above side effects, modern electrotherapy has many shortcomings. First of all, electroconvulsive therapy is complicated and dangerous to implement, which requires general anesthesia and oxygen inhalation, and it is difficult for primary hospitals to carry out it. Secondly, due to the high requirements of electroconvulsive therapy technology and equipment, the treatment cost is also high. Furthermore, electroconvulsive therapy, like drug therapy, cannot be done once and for all. It is necessary to maintain treatment, otherwise many patients will relapse. Therefore, it is generally recommended to take medication or irregular electrotherapy as follow-up maintenance treatment within 6 months after electrotherapy.