Dry and itchy eyes may be caused by visual fatigue, allergic conjunctivitis and other diseases, and artificial tears, sodium cromoglycate, levocabastine hydrochloride and other drops need to be applied for the cause. 1. Visual fatigue: usually, the treatment of visual fatigue is commonly used drops of artificial tears, can effectively relieve eye fatigue caused by discomfort, replenish the lack of water in the eyes, and at the same time need to close the eyes to rest, reduce eye use. 2. Allergic conjunctivitis: patients need to use topical sodium cromoglycate, lodoxamide and other mast cell stabilizers under the guidance of a doctor, as well as levocabastine hydrochloride, emetine fumarate and other antihistamine eye drops. When patients have symptoms of dry and itchy eyes, they need to go to the hospital, do a series of tests, and actively treat the primary disease.