The purpose of liposuction is to suck out the subcutaneous fat of the waist and abdomen by means of negative pressure, so as to achieve the purpose of fat reduction and shaping. In the circumferential liposuction surgery, if you choose an irregular and unqualified institution to perform the operation, you may have: 1, anesthesia accidents: liposuction of the waist and abdomen generally extracts a large amount of fat, most of them will take the anesthesia of intravenous general anesthesia, a few patients may have an allergic reaction to general anesthesia drugs, which can lead to anesthesia accidents and even death; 2, infection: in the process of liposuction, it is possible to bring bacteria or virus into the subcutaneous fat layer, which may cause local infection and require antibiotic treatment; 3, subcutaneous bruising and hematoma: local blood vessels may be damaged during the liposuction process, which may produce subcutaneous bruising if the blood vessels are small, and deep tissue subcutaneous hematoma if the blood vessels are large; 4, local skin depression: general skin liposuction, at most, can suck about 3000ml at a time. If too much fat is sucked out, it may cause the symptoms of skin depression. Therefore, it is recommended that when a candidate wants to undergo waist and abdomen circumferential liposuction for weight loss, he or she should go to a regular hospital and choose a qualified doctor.