Pain and swelling of the eyes and head may be physiological factors, or it may be a symptom of certain diseases, such as cluster headache, increased intracranial pressure, glaucoma, etc., and the patient should consult the doctor in time to find out the cause of the disease. 1. Physiological factors: If the patient is overworked and uses the eyes for a long time, causing visual fatigue, ciliary muscle spasm may cause the patient’s eyes to be swollen and painful, accompanied by headache and other uncomfortable symptoms. 2. Pathologic factors (1) Cluster headache: often unilateral headache, the patient around the eyes and the upper side can be accompanied by pain, headache side can also be accompanied by red eyes, runny nose and other symptoms. (2) Increased intracranial pressure: Brain tumor, cerebral hemorrhage, craniocerebral trauma, encephalitis and other diseases can lead to increased intracranial pressure, which can cause headache and eye swelling. (3) Glaucoma: patients with glaucoma can have elevated intraocular pressure on one side of the eye, accompanied by headache on the same side and eye pain and other discomforts, and patients with elevated intraocular pressure can also have nausea, vomiting and other discomforts. It is recommended that patients with obvious eye swelling and pain should consult a doctor in time to assess their condition and follow the doctor’s instructions for treatment.