Swollen eyelids may be caused by physiological factors, allergies, eye inflammation and other factors. 1. Physiological factors: in the late night, sleep, sleep pillow is too low, emotional anxiety and tension, etc., may lead to facial blood flow is affected, the problem of sleeping eyelids swollen, generally do not need to worry too much. Correct the routine, ensure adequate sleep, relaxation can be relieved. 2. Allergy: This kind of situation is often found in allergic people, such as allergies to dust mites, cosmetics, etc., which may lead to eyelid swelling after a nap. 3. Eye inflammation: when there is inflammation in the eye, it may lead to local tissue swelling, which may lead to the problem of swollen eyelids, accompanied by redness, pain and other manifestations. It should be noted that the eyelids may also be swollen with mosquito bites, systemic diseases and so on. If the eyelids are swollen with other symptoms, you should consult a doctor to clarify the cause of the disease and treat it under the guidance of the doctor.