There are physiological and pathological causes of eyelid swelling. Pathological causes include allergy, trauma, etc., which can be treated by general therapy and allopathic medication to reduce swelling. 1. Physiological causes: long-term late night, drinking a lot of water before going to bed, etc. can cause eyelid swelling, can be regular work and rest, avoid drinking too much water before going to bed and other measures to improve edema. 2. Pathological causes: allergy-induced eyelid swelling can take anti-allergy drugs such as cetirizine, benadryl and other drugs; trauma-induced eyelid swelling can be reduced by ice packs to reduce edema. Due to the diversity of causes and individual differences, there is no absolute safety and effectiveness of drugs, need to follow the doctor’s instructions to standardize the use of adverse reactions recommended to seek medical attention.