Fat-dissolving is to accurately locate the fat layer with a fat locator, and inject fat-dissolving liquid into the fat layer with a special fat-dissolving needle head, so that the fat tissue can be dissolved quickly, and the effect of non-invasive slimming and shaping can be achieved. The liposuction needle is dissolved with a special braking protection device, which can avoid blood vessels and nerves, has little damage to body tissues, does not need surgery, stitches and stitches, and has no pain during and after operation. After operation, the body shape was naturally slim, the skin was not blue, and there was no uneven sclerosis. The unique fat-dissolving solution formula will produce a large amount of collagen under the skin.