There are many causes of bulbar conjunctival congestion, which are usually seen in the following conditions. First, conjunctival congestion with increased abnormal discharge is usually considered to be a symptom of local infection, such as conjunctivitis, keratitis, etc. It is recommended that sensitive antibiotic drops and eye ointment be given to control local infection. Second, eye fatigue, usually due to excessive use of salt, usually pay attention to rest after the symptoms will improve on their own. Third, the acute phase of glaucoma, due to increased intraocular pressure resulting in mixed conjunctival congestion, for this case need to go to a regular hospital early to do intraocular pressure and fundus examination, and give active IOP reduction symptomatic treatment to reduce irreversible damage to visual function.