Allergic conjunctivitis is a very common disease in ophthalmology that is not easily cured, and because it is an allergic reaction, it is prone to recurring episodes, especially in children, which may gradually subside as they get older. This disease is mainly due to an allergic reaction of the eyes to the surrounding allergic substances, the symptoms of which are itchy and itchy, and may be accompanied by a foreign body sensation, burning sensation, photophobia, tearing and other symptoms in the eyes. For the treatment of this disease, it is recommended that local cold compresses be given at an early stage, supplemented by artificial tear drops, which can relieve the symptoms of itchy eyes. The use of antihistamines, such as sodium cromoglycate eye drops, azelastine hydrochloride eye drops, etc. If the symptoms are more severe, you can also apply topical glucocorticoid drops for a short period of time, such as fluticasone eye drops. Some severe cases require long-term use of immunosuppressive eye drops (e.g. tacrolimus) combined with desensitization.