The conjunctiva is a soft, smooth and transparent film located on the inner surface of the eyelid and the surface of the eye, which has certain defensive capabilities, but when the defensive capabilities are weakened or when external pathogenic factors increase, it causes inflammation of the conjunctival tissue, which is collectively called conjunctivitis. Conjunctivitis can be classified as hyperacute, acute, subacute, or chronic according to the course of the disease. Acute conjunctivitis is commonly known as “pink eye” and is somewhat contagious. The following methods of treatment: (1) rinse the conjunctival sac, with saline can be, its role is mainly clean, commonly used for saline, 2% to 3% shed acid solution or 1:5000 ~ 1:10,000 liters of mercury (or potassium permanganate) solution. Do not cover the affected eye, because there are many secretions in conjunctivitis, if the affected eye is covered, the secretions are not easily discharged, but collected in the conjunctival sac; and the cover will make the temperature of the conjunctival sac rise, more conducive to the reproduction of bacteria, so that conjunctivitis aggravated. (2) Topical medication, antibacterial or antiviral eye drops or eye ointment. Depending on the pathogenic diagnosis, the appropriate therapeutic drug is selected. (3) Systemic therapy For severe conjunctivitis, a combination of systemic medications is required. Therefore, the treatment of acute conjunctivitis needs to be based on the etiology.