With the continuous progress of the social level, obesity has become a big enemy that affects people’s health. Obesity makes people suffer from hypertension, heart disease and other cardiovascular diseases, which endangers people’s health. Liposuction surgery uses ultrasound, high-frequency electric field and other physical means to break up the fat, then through a small incision in the skin, the liposuction tube is inserted into the subcutaneous fat layer, using the suction of negative pressure to remove the body’s local accumulation of subcutaneous fat, in order to achieve the purpose of weight loss and improve body shape. Currently, liposuction has become one of the most performed cosmetic surgery procedures in the world and in China. There are various methods of liposuction surgery: electronic liposuction, ultrasonic liposuction, electro-mechanical liposuction and syringe liposuction. At present, ultrasonic liposuction and negative pressure are the most used methods, which can avoid the shortcomings of the negative pressure liposuction method, which is not very complete. Liposuction itself is very safe, it has been developed over 30 years and is technically very mature and stable. Although liposuction is very safe, there are certain indications and contraindications. It is possible to perform liposuction if you are between 18-55 years old, have limited fat accumulation, no organic heart and lung disease, no serious drug allergy history, no thrombophlebitis, no clotting disorder, etc. Liposuction surgery is not recommended during pregnancy to avoid affecting the fetus; for obese children, they are in the stage of growth and development, so interfering with their normal fat development through surgery will affect their body’s hormone metabolism level and thus interfere with their normal growth and development, so it is best to consider performing liposuction after the age of 18. The common areas for liposuction are fat-prone areas, such as the abdomen, waist, hips, thighs, calves, cheeks, lower jaw, upper arms, etc. For young women, in addition to improving their body shape and increasing their beauty, liposuction can achieve the miraculous effect of reducing or even eliminating stretch marks after childbirth and restoring good skin elasticity and luster to the abdomen after abdominal fat is absorbed. However, plastic surgeons recommend that women who want to get pregnant should not do so for 6 months to 1 year after liposuction. Older people should have a good grasp of the indications. 6 months without coronary heart attacks, hypertension is properly controlled, and other organs such as liver and kidney functions are basically normal before considering inpatient surgery. Although liposuction surgery is very safe, there is always a risk of greater or lesser extent. In order to avoid the occurrence of undesirable phenomena and to ensure ideal surgical results, it is important to choose a regular professional medical institution to perform the surgery.