Convulsion-free electroconvulsive therapy (MECT) is a non-pharmacological treatment that is effective in treating certain severe psychiatric as well as neurological disorders and is one of the important treatments in psychiatry today. Compared with medication, it can more rapidly control psychiatric symptoms, including schizophrenia, depression, and mania. The principle of electroconvulsive therapy is to achieve a balance of neurotransmitters in the brain by giving the body a short period of electrical stimulation with a small electric current, which leads to the reduction or even disappearance of psychiatric symptoms, and is now often used in the acute phase of psychiatric symptoms. Before MECT, anesthetics and muscle relaxants are injected, which can eliminate the choking sensation caused by muscle relaxants alone and reduce the fractures caused by sudden and strong muscle contractions, which is also called modified electroconvulsive therapy. The course of MECT is usually 6-12 times, usually once a day for the first week, and then gradually reduce the frequency of treatment to 2-3 times a week, increasing or decreasing the number of treatments as needed, even as a maintenance treatment for psychosis. In addition, although one course of MECT can end a single episode of illness, its duration of action is relatively short, and it cannot prevent the recurrence of illness in the following weeks, months or years, so it is still necessary to consider the continuation of treatment after MECT, including medication, psychotherapy or MECT maintenance treatment. In recent years, despite significant advances in the pharmacological treatment of mental disorders, MECT therapy remains the fastest-acting and safest treatment for patients with certain disease types, especially when used as an alternative to medications that are both ineffective and unsafe, and even save patients’ lives, with MECT being up to 90% effective in treating patients. There are risks and adverse effects associated with any treatment. For most patients, the adverse effects of MECT are relatively few and mild, and the risk of death is about 1 in 10,000 unless the patient has a serious previous physical illness. Serious complications are relatively rare, and with the use of modern anesthetic techniques, fractures and asphyxia are practically unheard of, and many patients with hypertension or heart disease can now be treated. Any treatment can cause death, but with the widespread use of MECT treatment in clinical practice, its safety has been effectively demonstrated. The more common adverse effects of MECT include headache, muscle aches, nausea, confusion, and memory difficulties, among which headache, muscle aches, and nausea are usually mild and can be prevented or reduced with medication. Confusion and memory difficulties can be seen after more than one course of treatment, but the symptoms will be relieved once treatment is completed and will slowly recover. Because mental disorders themselves often impair memory function, some patients successfully treated with MECT have been reported to actually recover from memory function. Overall, MECT is currently the main treatment in psychiatry and neurology, but because some people do not understand this treatment, when doctors mention this treatment, people will have a deep fear, thinking that this treatment is punitive, or that the treatment is very dangerous, so they avoid this treatment, such misunderstanding will delay the treatment of the disease. I hope the above introduction can eliminate the misunderstanding of this effective treatment method.