There are four main hazards of plastic surgery: 1. Anesthesia accident. Plastic surgery is a kind of surgery. If the operation is small, local anesthesia can be used. If the operation is big, you must be under general anesthesia. A small number of people will have allergic reactions to anesthetics. Mild people may have a rash and shortness of breath, and severe people may have anaphylactic shock and die. 2, bleeding, surgery will inevitably damage a part of small nerves and blood vessels, will produce bleeding or subcutaneous hematoma. 3, infection, surgery can bring bacteria or viruses under the skin, or even deep tissue, infection may occur, once infected patients may need oral or intravenous antibiotics before treatment. 4, trauma, plastic surgery is unnecessary surgery, if the patient does not achieve the expected results after surgery, it may need secondary repair, which will bring certain harm to his body and mind.