Red eye is the common name for the red eye of the heavenly line. The disease is mostly caused by wind-heat and poisonous evil, and tropical disease. It is equivalent to today’s acute infectious conjunctivitis. The onset of red eye is rapid, usually within 1-2 days of infection with bacteria, and most of the disease develops in both eyes. The disease is highly contagious, because the immunity is low after the cure, so the infection can be repeated (such as re-exposure to the patient can also get sick), from a few months of infants to 80 or 90 years old may develop. The epidemic is fast, after suffering from pink eye, often one person gets the disease, and within 1-2 weeks it causes widespread spread throughout the family, kindergartens, schools, factories, etc., regardless of sex, age, and a large number of patients are infected. Soak Chinese herbs such as Huang Lian in water for 15 minutes and then decoct it over fire, then pour out the decoction and put the rhubarb into the medicinal water to soak. Put the soaked rhubarb on both eyes at night before going to bed for about 2 to 3 hours.