The common sequelae of tear trough filling may include embolization of blood vessels, infection, facial stiffness, and rejection reaction. 1. Vascular embolism: in the process of filling, if the operator does not pay attention to pumping back, injecting the filler into the blood vessel, it may block the blood vessel, if it is a small blood vessel, the skin of the supply will turn black, and the patient will feel the pain, and it will be gradually aggravated; if it is a large blood vessel, the consequences are more serious, for example, injecting into the ophthalmic artery, it can be immediately blind. 2. Infection: If the operator does not operate properly during the filling process, resulting in the invasion of bacteria and viruses into the subcutaneous, there is a possibility of facial infection, and if the infection is serious, there will be pus, fluid, and even pain, and sometimes there may be a fever. 3. Stiffness of facial expression: Fillers are injected into the subcutaneous, usually 1 to 2 injections, and if a sustained effect is not achieved, multiple injections may be given, so the expression muscles may be affected, making the patient look stiff in expression. 4. Rejection reaction: If the filler is hyaluronic acid, the body may have some rejection reaction to hyaluronic acid, local redness, repeated swelling, and may need to take some anti-allergic drugs or even hormones. Because the tear trough is under the eye, the operation is difficult and the operating doctor needs rich experience, so it is recommended that the patient choose a regular hospital to consult after the interview.