Maligment melanoma of uvea is the most common malignant intraocular tumor in adults, accounting for the highest incidence of intraocular tumors in foreign countries and the second most common intraocular tumor in China after retinoblastoma. This tumor is highly malignant, easily metastasized via blood stream, and is more common in adults, and is easily confused with many fundus diseases in clinical work. Therefore, it should be given full attention in the clinical work of ophthalmology. The disease is more common in middle-aged and older patients. The posterior pole of the eye is the preferred site, and the incidence decreases in the forward direction. Uveal melanoma is a highly malignant tumor with no obvious causative factors. A reasonable diet with high fiber intake as well as fresh vegetables and fruits, balanced nutrition, including protein, sugar, fat, vitamins, trace elements and dietary fiber and other essential nutrients, meat and vegetables, diversified food varieties, and giving full play to the complementary effects of nutrients between foods are also very helpful in preventing this disease. 1, choroidal nevus: choroidal nevus is a benign tumor. The vast majority of them are stable and do not develop. Occasionally, it may affect its adjacent tissues, but it is rare to become malignant. 2.Choroidal hemangioma: Choroidal hemangioma is a benign tumor that usually occurs between the ages of 10-20. They can exist alone or can be part of the manifestation of craniofacial hemangioma, often combined with glaucoma. Histologically, these tumors are spongy and microscopically up to 90% are complicated by retinal detachment. Clinical manifestations: poor vision, which can be part of the presentation of craniofacial hemangioma, often combined with glaucoma. 3. Choroidal metastases. 4, wet age-related macular degeneration. 5, choroidal hemorrhage: choroidal hemorrhage has important clinical significance. Regardless of the amount of hemorrhage, it can lead to permanent visual impairment due to its damage to the retina, especially if it is located in the macula. Localized choroidal hemorrhage, which is also confined to the choroid, presents as a dark red, nodular or round mass of varying size with retinal vessels passing over the surface and a smoky gray or white retina in that area, with dark spots in the visual field at corresponding locations. If the hemorrhage involves the macula, the central vision is significantly diminished. The process of hemorrhage resorption is slow and usually lasts for several months. The permanent scar that remains is slightly smaller than the initial hemorrhagic mass, and residual choroidal white fibers and irregular pigmented masses are visible, which appear as blind areas in the visual field at the corresponding locations.