Myopia in a 6 year old child that reaches 200 degrees can already have an impact on the quality of vision, and will progress rapidly if not corrected in time and adjusted eye habits. A 6-year-old child with 200 degrees of myopia is already considered to be a more serious case, and must cause parents and doctors to be vigilant, and should first improve the dilated pupil optometry and other ancillary checks to rule out the impact of adjustment on vision testing. True myopia of 200 diopters and above will not only have a great impact on the quality of vision, but will also have a tendency to progress rapidly if not controlled in time. Under normal circumstances, 6-year-old children should not have myopia, but also retain a certain degree of hyperopia reserve or orthopia state, 6-year-old children in the sensitive period of visual development, myopia 200 degrees but also be vigilant about the emergence of strabismus amblyopia and other conditions, timely correction and regular review, the specific consulting physician’s opinion.