Myopia of more than 700 degrees belongs to high myopia, which is heritable, and the chances of heredity will become greater if the myopia increases further. In order to avoid this situation, after the eyes appear 700 degrees of myopia, must pay attention to maintain reasonable eye habits, which is the most effective way to control the speed of myopia development. And 700 degrees of myopia, in addition to the loss of distance vision, will also appear high myopia fundus pathology, such as retinal, choroidal atrophic changes, pigment disorders, and so on, and in serious cases may even appear retinal detachment. Therefore, this condition should also be noted in normal times, try to avoid strenuous exercise to prevent serious complications, and have regular fundus examinations, requiring at least 1-2 fundus examinations per year.