Adverse effects of TECT are mainly headache, memory and cognitive function effects, and bone and joint complications, while most of the adverse effects of MECT are myalgia, headache, diaphragm spasm, transient tachycardia, elevated blood pressure and recoverable memory impairment, aspiration pneumonia, and prolonged respiration. The adverse effects of TECT are significantly more severe than those of MECT, and the adverse effects of TECT include varying degrees of confusion, headache, dizziness and muscle pain. Patients are prone to fear and poor compliance with TECT treatment. The American Psychiatric Association believes that there are no absolute contraindications to MECT, and that MECT is the least dangerous of the medical operations performed under general anesthesia, and much less dangerous than childbirth. With the development of modern anesthesia techniques and the conditions of performing MECT under the application of heart, brain and lung monitoring techniques, the risk is reduced to extremely low limits, and fractures and asphyxia rarely occur in clinical practice, making MECT a safe and effective treatment. Some literature has shown that MECT is rapid and safe and effective in elderly psychiatric patients. However, in recent years, complications of anesthetics and muscle relaxants in the cardiovascular system (e.g., acute myocardial infarction, ventricular fibrillation, cardiac arrest) have been found to be a major cause of death from MECT. The anesthetic currently used in MECT, isoproterenol, is a new general anesthetic induction agent that has a depressing effect on both respiration and circulation, and can have an effect on both heart rate and blood pressure, while spironolactone also has a depressing effect on respiration and an effect on cardiovascular function. the convulsive episode of MECT itself increases the intensity of cardiac contraction, resulting in an increased heart rate, increased blood pressure, a 200% increase in cerebral perfusion, and a 200% increase in sugar and It can also cause a transient breakdown of the blood-brain barrier and an increase in intracranial pressure due to an increase in cerebral blood volume. Bradycardia occurs in a small number of patients during treatment and may be related to the increased vagal tone that inhibits cardiac activity after energization. FOLK et al. found that among the risk factors for death due to MECT (incidence 0.11%) are anesthetic problems, muscle relaxants and hypoxia, especially cardiovascular problems are common, and this treatment may cause changes in cardiac rhythm in addition to a significant increase in blood pressure, so care should be taken in the selection of treatment subjects. In conclusion, ECT should be avoided in those with recent myocardial infarction and intracranial hemorrhage tendencies; those with severe cardiac, pulmonary, hepatic, renal, and central nervous system diseases and those with recent infectious fever should also avoid using ECT to prevent accidents.