Overweight and obesity not only affect people’s physical beauty and self-confidence, but also lead to cardiovascular disease or let the existing condition aggravate. Overweight and obesity also have a close relationship with the occurrence of certain cancers, such as colon cancer, rectal cancer, endometrial cancer, ovarian cancer, cervical cancer, breast cancer, etc.. Although strict control of diet and physical exercise can lead to weight loss, the accumulated local fat is often difficult to disappear. Therefore, strictly speaking, fat aspiration is a shaping surgery, not a weight loss surgery, and it is the only surgical method that can effectively remove excess fat. The procedure involves making small incisions or punctures through the skin and then using negative pressure suction or ultrasound, high frequency electric field and other techniques to suction the fat that has accumulated under the skin, ultimately improving the bloated shape of the obese person. Liposuction has risks and common complications are: 1. local complications such as unevenness, asymmetry, under-suction, and erythema of the body surface. 2. Other complications such as hematoma, loose and sagging skin, infection, necrosis, damage to surrounding tissues, postoperative pain and difficulty walking. Systemic complications are: drug toxic side effects, fluid imbalance, cardiac overload, fat embolism and fat embolism syndrome, deep vein thrombosis and pulmonary embolism, necrotizing fasciitis, abdominal wall and visceral perforation, toxicity, syncope, etc. Indications for liposuction: The best indications are simple localized fat deposition and male breast development. Relative indications are severe obesity, lipoma, lymphangioleiomyomatosis, and as an adjunct to other procedures such as abdominoplasty. For poor shape caused mainly by skeletal or muscular factors, such as muscular development of the lower limbs and abdominal muscle laxity, the effect of simple fat aspiration is not good and should be combined with other surgeries to correct. Contraindications to liposuction: 1, heart, lung, liver, kidney and other important organ function decompensation can not tolerate surgery. 2, people with psychological disorders, high expectations of liposuction or overly demanding requirements for their own shape. 3.People with severe skin laxity and too little subcutaneous adipose tissue. 4.Those who are allergic to lidocaine or have metabolic disorders of anesthetic drugs. 5.People with local skin infection lesions or more scarring. 6.Heavy smokers and those with poor wound healing ability. 7, varicose veins in the lower limbs, those who should be prohibited from fat aspiration of the lower limbs. 8.Pregnant or lactating women. 9.Patients with morbid obesity and bulimia nervosa. 10.Patients who are less than 18 years old. Men with breast development and severe obesity are excluded. By mastering the above indications and contraindications for liposuction, you will know whether you can be a liposuction candidate. Special reminder for liposuction patients: Although liposuction is a mature cosmetic technique, serious complications have occurred repeatedly in recent years. The reasons for this are mainly due to irregularities by doctors from informal hospitals who have not been strictly trained. Therefore, if you are suitable for liposuction, you should go to a regular hospital and have the procedure performed by a plastic and cosmetic surgeon. At the same time, liposuction patients should work closely with their physicians and strictly follow medical advice so as to achieve good body shaping results.