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AIM: To observe the changes of eye movement parameters before and after appropriate treatment for school-age myopic children, try to investigate possible mechanism and obtain the most appropriate protocol for juvenile myopia. <p>METHODS: After getting the parents consent, 50 school-age children(age 7～12 years old)with visual acuity <0.8 were enrolled. All the subjects existed inappropriate treatment including measuring refraction under non-cycloplegia, wearing over- or under-corrected spectacle or inappropriate spectacle parameters <i>ect</i>. All the subjects were treated with appropriate treatment including measuring refraction under cyclopedia, dropping raceanisodamine eye drops 1～2 drops three times per day, adjusting spectacle parameters to appropriate range, <i>etc</i>. Before and 6mo after appropriate treatment, eye movement parameters including positive and negative relative accommodation, amplitude of accommodation and sensitivity of accommodation were measured with the comprehensive refractometer.<p>RESULTS: There are statistical significance in the amplitude of accommodation, the positive relative accommodation and the sensitivity of accommodation(<i>P</i><0.01)while no statistical significance in negative relative accommodation before and after appropriate treatment(<i>P</i>>0.01). <p>CONCLUSION: Appropriate treatment can save more accommodative amplitude and will benefit myopia progression.