Conjunctival disease is a general term for a group of diseases that can be divided into many different types, and the treatment plan is different for different diseases. The first, most common type of conjunctival disease is conjunctivitis, which is caused by viruses, bacteria, fungi, physical injury, chemical burns, immune factors, allergic reactions, etc. Symptomatic treatment is needed according to the specific cause, and antibiotic eye drops, antiviral eye drops, anti-allergy drugs, glucocorticoids, etc. can be chosen. The second type is neoplastic diseases of the conjunctiva, including benign and malignant tumors, which usually require surgical treatment. The third, some rare conjunctival degenerative diseases, such as pterygium, which usually do not need to be treated in the early stages, but if the pterygium grows larger, it is recommended that it needs to be surgically removed. The fourth type, subconjunctival hemorrhage, is also a common symptom, which can be treated with local cold compresses in the early stage, and then with local heat compresses after 48 hours.