Lipoma is a common tumor on the body surface, which is formed by the aggregation of fat cells and accounts for about 80% of benign soft tissue tumors. They are usually found in shoulders, back, buttocks and inner thighs. The masses vary in size, are mostly flat and round or lobulated, with clear boundaries, soft and elastic, no adhesion to skin, and normal or “orange peel”-like surface skin. The tumor develops slowly, and most of them have no conscious symptoms, and are occasionally detected. There is another kind of lipoma, which we call multiple lipomas, commonly found in the extremities, chest and abdomen under the skin, with multiple small round or oval nodules, which are harder than normal lipomas and can be mildly painful when pressed. Lipomas have no significant effect on the body and rarely become malignant, but they do affect aesthetics, especially if they are large and multiple, and often require treatment. The diagnosis of lipoma is not difficult, and it needs to be distinguished from hemangioma, lymphadenoma, cyst, neurofibroma and so on. When it is difficult to differentiate, tumor aspiration is a simple and efficient method. Surgical resection can easily remove the tumor tissue completely and is currently the conventional method of treating lipomas. Unfortunately, surgery can leave unacceptable, lifelong scars, and multiple lipomas can leave even more scars of varying sizes. We have introduced fat aspiration technology into the treatment of lipomas, which can effectively remove lipomas without leaving any visible marks through tiny punctures (2~3mm) in the skin, using negative pressure suction or supplemented with ultrasound and high frequency current, and have achieved very satisfactory cosmetic results. For hard tumors or cores, 1~2 small incisions of only about 2cm in length can be carefully designed, and a special instrument can be applied to subconsciously separate the tumors through the skin, and multiple hard tumors around the incision can all be removed by one small incision, minimizing the incision scar.