There are many causes of uveitis, mainly including secondary to eye diseases, systemic or other parts of infectious diseases affecting the eye, systemic or other parts of non-infectious diseases affecting the eye, trauma and external physical and chemical factor stimulation and other aspects. 1. Secondary to ocular diseases. Inflammation of the eye itself, such as keratitis, scleritis, etc.; inflammation of the tissues around the eye, such as periorbital abscess, etc.; intraocular necrosis of malignant tumors, intraocular hemorrhage, etc. can also be caused. 2. Systemic or other parts of the infectious diseases spread to the eye. Bacteria, viruses, fungi and other pathogens and other toxic products enter the eye through the bloodstream, thus developing the disease. 3. Non-infectious diseases of the whole body or other parts of the body affect the eyes. For example, autoimmune diseases such as compulsory spondylitis, in addition, AIDS, leukemia, etc. will also increase the probability of the disease. 4. Trauma and external physical and chemical factor stimulation. Eye surgery, eye trauma, etc., leading to bacterial invasion and infection; foreign objects into the eye, thermal burns, etc., can cause this disease. Low immune function, mental tension, excessive stress, etc. are all risk factors for the disease, so in addition to the necessary treatment, it is also necessary to change bad habits and lifestyles, and to conduct regular reviews to detect abnormal symptoms in time.