Conjunctival papillary hyperplasia is defined as a localized lesion of the conjunctiva caused by massive proliferation of conjunctival epithelial cells accompanied by vascular hyperplasia and infiltration of inflammatory cells, presenting as a punctate or bulbous elevation, with the surface of the conjunctiva under the naked eye being fluffy and non-smooth, and umbrella neovascularization visible in the central part of the papilla under the slit-lamp biomicroscope, which gives the papilla a reddish color. The etiology of conjunctivitis is divided into two main categories: infectious and non-infectious. Infectious causes include viruses, bacteria and chlamydia, while fungi, spirochetes and parasites are rare. Non-infectious causes include immunologic factors, chemicals, physical factors, and systemic diseases. Conjunctivitis (conjunctivitis): is a common disease in ophthalmology, but its incidence has not yet been determined. Since most of the conjunctiva is in direct contact with the outside world, it is easily stimulated by infectious (e.g. bacteria, viruses, and chlamydia, etc.) and non-infectious factors (trauma, chemicals, and physical factors, etc.) in the surrounding environment. Moreover, the conjunctiva is rich in blood vessels and lymphatic tissues, which are easily sensitized by its own antigens as well as those of the outside world. Conjunctivitis is a collective term for the inflammatory reaction that occurs in the conjunctival tissue in response to external and the body’s own factors. Although conjunctivitis itself does not usually have a serious effect on vision, when its inflammation spreads to the cornea or causes complications, it can lead to visual impairment. Catarrhal Conjunctivitis: A common infectious eye disease caused by bacterial infection, also known as bacterial conjunctivitis. It is also known as bacterial conjunctivitis. In Chinese medicine, it is called “stormy guest fever”, commonly known as “outbreak of fire eye”. Spring conjunctivitis: this disease is seasonal conjunctivitis, every spring and summer warm season onset, after the fall cool self relieved, the following year spring and summer again, so also known as spring Kata (spring conjunctivitis). Most common in children or adolescents (3~25 years old), more men than women (male to female ratio of 3:1). Chronic cicatricial conjunctivitis: a chronic inflammation of the conjunctiva caused by a variety of reasons, the course of the disease is long and stubborn, is a common eye disease, more bilateral onset. Acute Catarrhal Conjunctivitis: It is a common acute epidemic ophthalmic disease caused by bacterial infection, which is mainly characterized by obvious conjunctival congestion with purulent or mucopurulent secretion, and is usually a self-limiting disease.