Blinking pressure pain in the corner of the eye is usually caused by external stimuli or eye diseases. External stimuli include foreign bodies, trauma, etc. Eye diseases include blepharitis, conjunctivitis, blephar gland cysts, etc. The common ones are as follows: 1. External stimuli: 1. Intraocular foreign bodies: are caused by foreign bodies such as sand and flying insects entering the eye and causing pain and swelling in the corner of the eye, etc. Patients are advised to use saline or water for cleaning to facilitate the removal of foreign bodies; 2. Ocular trauma: is caused by eye contusions, chemical injuries, electro-optical irritation injuries, etc., resulting in eye damage causing pain and swelling in the corner of the eye, if accompanied by orbital fractures also It is recommended to seek medical attention promptly after eye trauma to avoid affecting vision. The most common cause of blepharitis is a bacterial infection of the sebaceous gland or lid gland at the root of the eyelash follicle at the edge of the eyelid, resulting in painful blinking and pressure, congestion, swelling, and possibly hard nodules or pus when touched; mild blepharitis does not require medication, and can disappear on its own within 1-2 weeks if the symptoms continue to worsen or do not improve. If the symptoms continue to worsen or do not improve, you will need to see a doctor for antibiotic treatment or surgical drainage of the pus. 2. Conjunctivitis: inflammation of the blood vessels in the conjunctiva triggered by bacteria, viruses, allergies, and other factors, which in turn leads to pain, itching, and increased discharge from the corners of the eyes, can be treated with drugs such as ofloxacin, tobramycin, and acyclovir for anti-infection and antiviral treatment.