Headache and eye swelling are caused as follows: 1. Clinically, it can be caused by functional diseases, such as visual fatigue. The patient can experience visual fatigue after watching cell phones and TV for a long time, and when the visual fatigue is serious, the patient can experience eye pain accompanied by headache. It is recommended that patients can apply hot compresses and massage to the eyes, and apply eye drops to relieve eye fatigue if necessary.2. Headache and eye swelling pain can also be seen clinically in migraine attacks. There is usually a history of recurrent headache attacks, and in severe cases, the patient can also be accompanied by nausea and vomiting. For migraine, patients can be given non-steroidal anti-inflammatory drugs, such as ibuprofen, acetaminophen and, if necessary, ergotamine preparations, etc. 3. Headache and eye swelling can also be seen in patients with glaucoma. Due to the increase in intraocular pressure caused by glaucoma, eye swelling and stinging pain can occur, which can also be accompanied by headache, and the patient is advised to consult an ophthalmologist.