Laser lipolysis does not directly extract fat, but uses fat cells as the target cells, and shatters and destroys them through the irradiation of special laser. Laser lipolysis is a minimally invasive treatment with relatively high safety, but if it is not done properly, it may cause some harm to human body: 1. In the process of lipolysis, if the laser beam radiation is shallow, it may directly cause skin burns and may also form permanent scar; 2. If the amount of laser lipolysis is excessive and the post-operative pressure is not appropriate, the larger cavities under the skin will be filled with serum-like liquid, forming seroma, which will be absorbed on its own after pressure bandaging for small seroma, while larger ones may need to be aspirated or cut and released; 5. Although laser lipolysis does not require surgery, there will be a certain degree of pain, and the pain will gradually disappear in about three days after surgery, and generally no special treatment is needed. In summary, it is recommended to go to a regular and qualified hospital or institution to do laser lipolysis.