Acute bacterial conjunctivitis is a common acute epidemic eye disease caused by bacterial infection. Its main features are marked conjunctival congestion, purulent or mucopurulent discharge, and a tendency to heal on its own. It can be transmitted through contact with the patient’s eye secretions or tear-stained objects (such as towels, handkerchiefs, washbasins, etc.), shaking hands with the patient or rubbing the eyes with dirty hands. In summer and autumn, the hot weather makes it easy for bacteria to grow and multiply, which can very easily cause a pandemic. The main characteristics of this disease: conjunctival congestion in one or both eyes, large amounts of mucopurulent discharge, but generally does not affect vision. If left untreated, some of them turn into chronic conjunctivitis. The common causative agents are Staphylococcus pneumoniae, Koch-Weeks bacillus, Staphylococcus epidermidis, Staphylococcus aureus, and Streptococcus. The latter two bacteria can normally parasitize the conjunctival sac and do not cause conjunctivitis, but can cause episodes of acute conjunctivitis when other conjunctival lesions and local or systemic resistance are reduced, and the bacteria can come into direct contact with the conjunctiva through a variety of media. It spreads rapidly in public places, such as kindergartens, schools and homes, leading to epidemics, especially in the spring and autumn. Conjunctivitis-causing bacteria may also be transmitted via respiratory secretions. In severe cases, there is heavy eyelids, photophobia and a burning sensation. Sometimes the secretions adhere to the pupillary area of the corneal surface, causing temporary blurred vision, which can be restored after flushing. When the lesion invades the cornea, there may be symptoms such as photophobia, eye pain, and visual loss. On examination, the eyelids are swollen and the conjunctiva is congested and bright red, most notably in the lid and the conjunctiva of the dome. In severe cases, the surface of the conjunctiva may be covered with a pseudomembrane that can be easily rubbed off, hence the name pseudomembranous conjunctivitis; the bulbar conjunctiva is variously congested and edematous, with loss of transparency and mucosal or purulent secretions covering the cornea and conjunctival surface, lid margins, etc. For treatment, it is best to choose one sensitive antibiotic eye drops according to different pathogenic bacteria. If the bacterial species cannot be clarified, broad-spectrum antibiotic eye drops, such as the now commonly used oxyfloxacin or levofloxacin eye drops and ointment, can be used. Depending on the severity of the disease, eye drops should be applied every 2-3 hours or even every hour, and eye ointment should be applied before bedtime, and in case of concurrent keratitis, it should be treated as keratitis. Treatment should be timely and thorough to prevent recurrence and conversion to chronicity. It should be noted that: 1. If the disease is found, it should be isolated in time, and all utensils should be used separately, preferably washed and dried before use. 2. Pay attention to hand hygiene. It is important to develop good habits of washing hands regularly, not rubbing eyes with dirty hands, and to cut nails regularly. 3. In addition to active treatment, do not use shared towels, washbasins, etc.