To investigate the visual acuity of the primary school children. This study was researched visual acuity test using objective and subjective methods. 1. The eye types were 90.3% positive for myopia, 3.1% for emmetropia, 4.9% hyperopia, 1.7% for mired astigmatism. 2. The abnormal refraction eyes were 58.6% positive for simple myopia, 29.9% for myopic compound astigmatism, 5.1% for my optic simple astigmatism and 1.9% for simple hyperopia, 1.9% for hyperopic compound astigmatism, 1.3% for hyperopic simple astigmatism, 1.3% for mixed astigmatism. 3. The axis of astigmatism were 85.7% for astigmatism with-the-rule, 9.3% for astigmatism against-the-rule, 5.0% for astigmatism oblique. 4. On total myopic spheric power. the -0.50<spheric equivalent<-2.00diopter was 49.8%. the -2.00<spheric equivalent<-6.00diopter was 49.5% and anything over the -6.00diopter was 0.7%. 5. On the astigmatic power, the 0.50<cylinder<1.00diopter was 50.6%, the 1.00<cylinder <2.00diopter was 24.7% and anything over the 2.00 cylinder diopter was 24.7%. 6. The total hyperopia spheric power was 71.4% anything under 2.00diopter and 28.6% for anything over the 2.00diopter.