The side effects of autologous fat augmentation include: 1, routine side effects: including infection, inflammation, bleeding, and scarring of the incision. To prevent infection, pay attention to non-invasive and gentle operation so as not to damage the fat, and use antibiotics after surgery. To prevent bleeding, we should pay attention to gentle movements, stop using vitamin E, aspirin, antibiotics or drugs that affect blood clotting before surgery, as well as ensure sleep, prevent incisional scarring, and pay attention to choosing a more concealed area; 2. Special side effects: mainly include the production of hard knots or fatty lumps, some of which are temporary and can be gradually cleared, while some of them are very thick and can exist permanently, requiring further treatment.