Although abdominal liposuction is a standardized operation in plastic surgery, it is still a man-made traumatic operation, so the health status of patients and the amount of suction during the operation determine the safety of the operation. Therefore, in order to ensure the safety of surgery, the following conditions are not suitable for surgery, because morbid obesity secondary to other diseases does not belong to the treatment scope of liposuction; Poor general condition or dysfunction of major organs such as heart, liver, lung and kidney; Old people over 50 years old and immature teenagers; Liposuction should be prohibited in women with abnormal coagulation mechanism and in menstrual period.