Conjunctivitis in children is usually considered to be related to infectious or allergic factors. If a child’s eyes are suddenly found to have significant conjunctival congestion with tearing, and if there is a significant increase in eye discharge in the corners of the eyes, it is usually considered to be an infection that is causing conjunctivitis. If the discharge is yellowish-white and sticky, it may be related to a bacterial infection and should be treated with antibiotic eye drops and antibiotic eye ointment. If the discharge is thin and sticky, it may be accompanied by a history of acute upper respiratory tract infection, and viral conjunctivitis is initially considered, so treatment with antiviral eye drops and ointment is recommended. If the child is allergic, usually accompanied by eczema, or allergic rhinitis, sometimes in the spring and autumn, or after exposure to pollen, etc., the eyes appear red and itchy performance, frequent blinking considered allergic conjunctivitis. The first thing to do is to look for allergens and try to avoid contact with them, in addition to strengthening the resistance to prevent the recurrence of the disease. When you have an attack, consider using anti-allergy eye drops, more commonly mast cell stabilizers and antihistamine eye drops; if the symptoms are severe, you can use hormonal eye drops for a short time.