Liposuction has evolved over the past 30 years, and its techniques have become increasingly sophisticated. Currently, in addition to the classic negative pressure liposuction (SAL), there are also commonly used syringe liposuction (SL), ultrasonic liposuction (UAL), exogenous ultrasonic liposuction (EUAL), electronic liposuction (lipomodel), hypotonic pharmacologic lipolysis (HPL), automatic reciprocating liposuction (PAL), laser-assisted liposuction, endoscopic-assisted liposuction, and many other methods. , laser-assisted liposuction, endoscopic-assisted liposuction, and many other methods. At present, laser-assisted liposuction and endoscopic-assisted liposuction are rarely used abroad or domestically for reasons such as their lack of obvious superiority compared to traditional techniques. Negative pressure liposuction (SAL), syringe liposuction (SL), ultrasonic liposuction (UAL), and several other methods are also commonly used and have their own unique features. Negative pressure liposuction (SAL) and syringe liposuction (SL) are based on the same principle, and the operation techniques are basically similar. With the invention of swelling technology and its introduction into the clinic, low negative pressure suction has become possible, and the electric method of liposuction has also gradually adopted low negative pressure and small-diameter suction tubes, which have shown a tendency to learn from each other and integrate with each other. Ultrasonic liposuction (UAL) has become increasingly popular in recent years due to its unique advantages. Through a large number of clinical observations, most scholars believe that UAL cannot replace SAL, but the combination of the two makes fat suction safer and more effective, especially in large-volume fat suction and in areas with more fibrous tissues, the advantages of UAL are more obvious. The choice of liposuction method should be based on the scope of application of each liposuction method and the operator’s proficiency, as long as it is correctly selected and operated, a better postoperative result can be achieved. In addition, the operator should be familiar with the shortcomings of the methods used to avoid serious complications.