Semi-permanent lash line is a natural plant color implanted into the epidermis of the eyelid margin, and a thin decorative line is drawn along the natural course of the edge of the patient’s eyelash root, playing a role in increasing the thickness of the eyelashes, while having the effect of enlarging the eyes and changing the shape of the eyes, and the level is closer to the root of the eyelashes than traditional eyeliner. The main features are shallow operation level, slight crusting, natural effect, easy removal and short maintenance time, but the following common complications may exist: 1, decoloration: there is a trauma recovery period after treatment, crusting will occur, and slight color loss will occur after crusting, so it needs to be adjusted by secondary color replenishment later; 2, skin numbness or pain: it is a normal post-operative adverse reaction, generally within the tolerable range; 3, subcutaneous bruising: due to the injection, the skin is numb and painful. 3, subcutaneous bruising: due to the syringe injection of anesthetic piercing the blood vessels, can cause subcutaneous bleeding, skin manifestation of blue-purple, need timely treatment; 4, postoperative eye infection: if improper postoperative care, eye infection may occur, need to seek medical treatment as soon as possible; 5, infectious disease epidemic: more than one person with the same tattoo needle caused the spread of infectious diseases; 6, other: if the quality of the color used is not good, may also appear eyelash Line blotting, decoloration, eyelid swelling, color allergy, etc., may also lead to the loss of their own eyelashes or damage to their own eyelashes. To sum up, candidates can choose a regular hospital and an experienced doctor to perform this surgery to prevent the above-mentioned adverse consequences.