The risks and hazards of fat breast augmentation surgery may include anesthesia accident, fat liquefaction, infection and so on. 1. Anesthesia accident: because fat breast enlargement surgery will choose general anesthesia, some patients will have allergic reaction to the drugs of general anesthesia, the mild case of redness of the skin, rashes, and the severe case can be death. 2. Fat liquefaction: when fat is injected into the chest, the fat will not be fully absorbed, and the fat with low viability may liquefy, and the chest will have pain or pus and fluid. 3. Infection: Whether it is the area where the fat is taken or the chest where the fat is injected, infection of the cutting hand and the surgical site and poor wound healing may occur. Patients are advised to go to regular hospitals for surgery to reduce the risks and hazards of surgery. After surgery, pay attention to the wound, pay attention to rest, pay attention to diet, avoid eating spicy and stimulating food, avoid staying up late.