If a child has high myopia, the condition is usually due to congenital genetic factors, for example, if the child’s parents have high myopia, the child’s likelihood of developing myopia is much greater than normal, and the age of high myopia is also earlier than normal. Once a child has high myopia, it has a very big impact on the development of the eyes, so this situation must be taken seriously. First, go to the hospital for a detailed eye examination, including visual acuity examination, optometry and fundus examination, to clarify whether there is any growth of the eye axis and whether there are any lesions of the eye fundus. Secondly, we should wear glasses accurately, which is the best way to improve the corrected vision. Third, we should pay attention to maintain reasonable eye habits to prevent further growth of myopia.