There are many causes for a bad fundus, which can be caused by many diseases such as optic neuropathy, retinopathy and macular lesions. Therefore, it is important to identify the cause before considering how to treat it. For the treatment of fundus disease, the clinical treatment commonly used are medication, laser treatment, surgery, and so on. For example, if diabetic retinopathy causes fundus lesions, medication and fundus laser treatment are considered in the early stage. If there is obvious hemorrhage in the fundus, oral medication can be taken at the same time to promote the absorption of the fundus. In case of retinopathy with traction and massive blood accumulation in the vitreous cavity, surgery is recommended. In addition, if various fundus diseases cause macular edema, vitreous cavity injection can be considered as a treatment method. In conclusion, fundus diseases can seriously affect vision and are tedious to treat, requiring early diagnosis and symptomatic treatment.