Scars affect appearance and in some cases, function. Scars bring great physical and mental pain to patients, especially those left after burns, trauma, and surgery. Autologous adipose tissue is the most important treatment in plastic surgery, which has developed rapidly and is widely used in plastic and cosmetic surgeries, such as hemifacial atrophy, breast reconstruction, and facial rejuvenation. Adipose tissue contains a large number of fat stem cells, which have powerful tissue repair and regeneration function, and have more significant effect on the treatment of scars. Autologous fat intra-scar injection can promote scar softening, reduce scar congestion and pigmentation, and repair scar depression. Although autologous fat grafting can be used to treat scars, the traditional classic Coleman method of fat grafting, where the fat particles extracted are large, tends to clog the injection tube when the fat is injected with a thin tube, so the fat obtained cannot be injected into the dermis, making it difficult to be used in the treatment of scars. Therefore, we have improved the method by using a liposuction tube with multiple side holes of 1mm in diameter, which can obtain smaller fat particles that can be injected into the dermis and scars with 23G and 25G tubes, which can be used to treat small facial wrinkles and scars.