Swelling and pain around the eyes may be a physiological phenomenon, caused by excessive eye use and lack of sleep, or it may be caused by disease factors such as blepharitis and conjunctivitis, etc. The pain and swelling around the eyes may be a physiological phenomenon, caused by excessive eye use and lack of sleep. 1. Physiological phenomenon: may be due to a long time with the eyes, coupled with lack of sleep, this physiological phenomenon of swelling and pain around the eyes, usually transient, pay attention to rest the eyes, adjust the habits can be relieved. 2. Blepharitis: Blepharitis is an acute purulent inflammation of the eyelid glands, often referred to as granuloma, mostly caused by staphylococcus, especially Staphylococcus aureus infection, the affected area will be red, swollen, hot, painful and other typical manifestations of acute inflammation, which causes swelling and pain around the eyes. 3. Conjunctivitis: Conjunctivitis symptoms include foreign body sensation, burning sensation, itching, etc. Important signs include conjunctival congestion, edema, exudate, papillary hyperplasia, granuloma, etc., which will cause swelling and pain around the eyes. There may be other reasons for the swelling and pain around the eyes, when this symptom occurs, excluding physiological phenomena, it is recommended to consult a doctor in time to identify the cause of the disease and carry out appropriate treatment.