Clinically very mature traditional liposuction solves the problem of unattractive shape caused by local accumulation of fat, allowing the majority of women who love beauty to realize the ideal of becoming beautiful. However, most of the obesity will be accompanied by slight or obvious skin laxity. Traditional liposuction surgery cannot solve or improve the problem of skin laxity at the same time as liposuction and shaping. Now plasma plasma fiber laser lipolysis can remove excess fat and tighten the skin at the same time to improve the problem of skin laxity. This is a major breakthrough in clinical practice and has improved the post-operative results of body contouring. The principle of laser lipolysis: heat is the main stimulus for lipolysis and skin tightening, the internal temperature must reach 48-50oC, the corresponding external temperature is 38-41oC. The effect of laser skin tightening: 1, increase the number of fibroblasts; 2, the synthesis of new collagen; 3, tighten the loose skin; 4, increase the elasticity of the skin. Indications for laser lipolysis: 1, any fat accumulation with moderate skin loosening, face, under the chin (double chin), upper arms, back, thighs, knees, calves; 2, dense tissue areas: male breast, buttocks, back; 3, unevenness after liposuction; 4, unevenness after abdominoplasty; 5, treatment of orange peel changes, axillary odor, facial rejuvenation, eye bags.