Myopia in 6-month-old infants may be related to imperfect development, improper diet, heredity and other reasons. 1. Imperfect development: 6-month-old babies myopia may be due to congenital imperfect development, for the time being, close observation, if the vision with the growth and development gradually improved, is a normal physiological phenomenon. 2. Improper diet: usually infants 6 months of age can be added to the appropriate complementary foods, research has shown that if there is a long-term lack of micronutrients, nutritional imbalance, it is easy to cause myopia. 3. Heredity: A large number of clinical investigations have shown that myopia has a certain genetic predisposition, and it is relatively clear that high myopia occurs as autosomal recessive inheritance. Myopia is a kind of refractive error, 6 months myopic babies need to go to the hospital in time to do a series of relevant examinations to determine the degree of myopia, clear specific causes, and at the same time need to strengthen the daily life management, if necessary, may need to actively cooperate with the doctor to carry out treatment.