Liposuction is a very delicate work, it is not only about weight reduction but also about body sculpting, so before the surgery the surgeon will make a professional design according to the actual weight, height and features of the candidate. The candidate first stands straight and relaxes the whole body so that the fat accumulation or sagging areas are as visible as possible. At this time, the surgeon carefully marks and draws the aspiration area from medical and aesthetic point of view and marks the degree of fat accumulation with contour lines. After anesthesia, a small incision suitable for the thickness of the suction tube diameter, generally 1 to 2 cm long, is made in a hidden area of the skin or in a natural crease, while the incision should be chosen in a location convenient for operation, and the suction tube should be put in smoothly; an excessively long incision will affect the negative pressure effect. Inject swelling fluid to make the fatty tissue swell and liquefy for easy suction. Choose a suitable caliber suction tube, insert it from the incision and submerge it 2 cm under the skin to the treatment plane, with the lateral hole down, start the electric suction device, hold the handle of the suction device with the right hand, pinch the skin and fat together after touching the suction tube with the left hand, move the suction tube back and forth at the tunnel according to the design, and at the same time closely observe the collection bottle of the catheter and the electric suction device, if you see that the suction material is mainly blood-colored and there is a rough feeling when the suction tube is moved If you see that the suction is mainly blood-colored and there is a rough feeling when the suction tube moves, you should change the site of suction. After the suction is completed, a negative pressure suction ball should be placed in the incision to drain the fluid and blood in the cavity, and a pressure bandage should be applied to facilitate pressure to stop bleeding, eliminate the dead cavity, promote blood and lymphatic reflux, and make the wound heal smoothly. The fat or plasma exudate drained from the negative pressure suction ball will be reduced day by day and can be removed in 1 to 2 days generally, at this time, we should pay attention to the care of the operation area to prevent wound infection. If local edema occurs, candidates need not worry too much, it usually subsides in a few weeks. To help the skin retract and facilitate contouring, tight fitting garments will also need to be worn for 4-6 months.