Bacterial conjunctivitis is usually most severe around day 3 and viral conjunctivitis is usually most severe around day 5. The clinical course of conjunctivitis varies depending on the virulence of the microorganism, the type of microorganism, and the strength of the patient’s resistance. The course of the disease is usually about 2-3 weeks, with the most severe symptoms usually occurring on days 3-4 of the disease course. Bacterial conjunctivitis is characterized by red eyes, conjunctival congestion, burning sensation, photophobia, and lacrimation, and peaks in about 3 days, and is usually cured in about 7 days with aggressive treatment. Viral conjunctivitis manifests as conjunctival congestion, eyelid edema, etc. It is usually most severe on day 5 and can be treated with acyclovir eye drops and ganciclovir eye gel, which can return to normal in about half a month. Patients need to pay attention to keeping their eyes clean, and advocate washing hands and faces, not using hands and sleeves to wipe eyes, and washing hands before and after meals. Patients need to do moderate physical activity to enhance resistance and shorten the course of the disease.