Objective To analyze the relationship between near fusional range and ametropic correction on myopic children before and after ametropic correction and to predict horizontal binocular balance. Methods This was a cross-sectional study. The near positive and negative fusional vergence and horizontal binocular balance among 60 myopic children before and after ametropic correction were measured and binocular symptoms were predicted. In addition， myopic children were classified according to refractive error： Group A，-0.50 to -1.00 D， 20 cases； Group B，-1.25 to -2.00 D， 20 cases； Group C， -2.25 to -3.00 D， 20 cases. Another 30 emmetropic children were chosen as a control group. Data were analyzed using a one-way ANOVA and chi-square test. Results There were significant differences among the refractive groups for the uncorrected near positive fusional range （F=85.88， P<0.01）， but there was no significant difference in the negative fusional range in Group A（F=1.48， P>0.05）. The fusional range decreased in uncorrected myopia to +12.50 to -15.89 △. The binocular vision of the uncorrected group was significantly imbalanced compared to the emmetropic children （?字2=47.27， P<0.01）. Conclusion Without correction， the effects of low myopia on near fusional range are detectable， especially on near positive fusional vergence. In addition， the imbalance in binocular vision increase noticeably.