Silkworm is actually a structure formed by thickening the edge of the orbicularis oculi muscle of the lower eyelid. Some people, due to the small size of the silkworm, may have to shape their appearance by hyaluronic acid to make their eyes look more spiritual. However, since any surgical operation has certain risks, the following points should be paid extra attention to: 1, after hyaluronic acid injection, if due to insufficient amount of injection or too much injection, injection is not uniform, it may cause the local appearance of the form is not good, but also in the injection of hyaluronic acid after the deformation and displacement; 2, it may cause the injection site of the bruising, redness and swelling, tenderness, hard knots, etc., can be dissipated by 1-2 weeks, if the If the blood vessel is punctured during injection, persistent redness, swelling, heat, pain and other infectious symptoms may occur in mild cases; 3. Embolism complication: this part is rare, mainly due to the fact that hyaluronic acid is a kind of liquid small molecule with mobility, and improper operation may lead to hyaluronic acid entering into the blood vessel. If hyaluronic acid is injected into superficial blood vessels, it may lead to local tissue blood circulation disorder, skin ischemia or necrosis. In severe cases, hyaluronic acid particles enter into vital organs or parts with blood circulation, such as brain, eyes, etc., which may result in serious consequences such as localized cerebral infarction, varying degrees of blindness, visual field defects, or even death.