Lye in the eye can be treated by washing with water, rinsing with saline as prescribed by the doctor, and medication. 1. Cleaning with water: When alkali gets into the eye, patients are advised to rinse the conjunctival sac thoroughly with clean tap water immediately to minimize its damage to the eye. 2. Saline rinsing: After rinsing with water, the patient should go to the eye hospital immediately and rinse again with saline under the doctor’s guidance for at least half an hour. Afterwards, the patient should be examined by the doctor and treated according to the degree of corneal epithelial damage. 3. Drug treatment: after the examination, in order to prevent eye infection, anti-infective drugs can be used under the guidance of the doctor, such as levofloxacin eye drops, norfloxacin eye drops and so on. Corneal epithelial damage exists, can also be applied under the guidance of the doctor to promote corneal repair of drugs such as recombinant bovine basic fibroblast growth factor eye drops. In the case of alkali in the eye, patients are advised to rinse promptly and go to the hospital. Medications should be used under the guidance of a doctor and should not be used blindly.