Chronic conjunctivitis can be cured with persistent treatment. However, there are many causes of chronic conjunctivitis, which can be prolonged from acute conjunctivitis or caused by long-term topical medication irritation. Long-term sand, smoke, dust, dry and hot environment, the mechanical stimulation of inverted eyelashes, as well as visual fatigue, chronic dacryocystitis, blepharitis, blepharosphenoid gland dysfunction, refractive error, etc. can cause chronic conjunctivitis, so the patient’s condition is easy to recur, and the latent period is relatively long. Generally in the acute phase of active treatment, can be a one-time cure, but if the long-term delay is very difficult to cure, can only be in the acute attack of the symptom control in the effective range, once the attack and continue to use the drug, in the intermittent period can not use the drug, pay attention to observation, pay attention to the eye hygiene and habits, less use of the eyes, more rest.