Compared with other allogeneic tissues or synthetic materials, it has excellent biological characteristics and is completely non-toxic to the organism, and will not cause changes in the internal environment of the organism and produce immune or rejection reactions. Moreover, autologous fat is abundant in source, and for obese patients, it can also achieve weight loss effect. However, it should be noted that autologous fat filling tear trough may lead to the following risks: 1. Autologous fat may emulsify and lead to facial depression. Therefore, when patients fill the tear trough, they must be carried out under the guidance of professional doctors, which can effectively avoid the occurrence of side effects, so as to achieve the best therapeutic effect and help maintain the beauty of women’s faces; 2. Autologous fat filling of the tear trough may cause local swelling after surgery. With ordinary fat grafting, the swelling period may be 3-5 days, and the swelling usually subsides in no more than 5 days. Some doctors have poor injection techniques and are rough, which may cause blood vessels to bleed and cause hematoma, and the swelling may take longer to subside. Generally speaking, if there is hematoma, it will take 1-2 weeks for the swelling to go down; 3. If the injection goes to the blood vessel, it may cause embolism and lead to blindness, cerebral infarction, or even life threatening; 4. Fat liquefaction, calcification, subcutaneous nodules or unevenness may occur; 5. If the injection is not in the right position, the phenomenon of deepening tear trough may occur. Patients are advised to visit regular hospitals to avoid risks in order to obtain satisfactory results.