The main cause of blepharitis is a decrease in systemic resistance, which leads to a high level of lid gland secretion, seborrhea, and germ infection, which in turn leads to a rotten eye. The main cause of blepharitis is a decrease in systemic resistance, which leads to a high level of secretion from the lid glands, seborrhea and bacterial infection, which in turn leads to blepharitis. Experts point out that rosacea is a very harmful condition to the patient’s eyes and patients need to seek medical attention as soon as possible in order to minimize the damage. The first thing to do is to use a cotton swab dipped in warm water to wash the secretions from the eyelids and apply antibiotic eye ointment, such as erythromycin eye ointment and rifampicin eye ointment, three or four times a day. The eye is then treated with 0.5% zinc sulfate eye drops or antibiotic eye ointment, along with oral vitamin B2. Ulcerative blepharitis should be treated by removing the eyelashes before applying medication, and treatment should be consolidated for two weeks after healing. The most important thing you can do to prevent blepharitis is to develop good hygiene habits. Don’t rub your eyes with your hands, don’t wipe your eyes with unclean things, and don’t use eye drops that others have used. When wiping your eyes, be sure to use a clean handkerchief, handkerchiefs should often be ironed and sunburned. You should also pay attention to the removal of various factors that stimulate the eyes, timely correction of refractive error, maintain adequate sleep, pay proper attention to nutrition, while enhancing physical fitness and body resistance, if there are chronic diseases should be actively treated at the same time.