AIM:To determine the prevalence and development of astigmatism in 30-39 years old people in Hubei and find out the relationship between its change rule and different myopic degree.METHODS:A total of 786 patients(30-39 years old)were randomly selected in Hubei and the relationship between the diopters and axes of astigmatism was analzed.RESULTS:Among the 30-39 years old dwellers in the Hubei area,astigmatism of 25-150 degree in each myopic degree section accounted for the largest percentage,in high myopia section of male group,it accounted for about 84.6%,in moderate myopia section about 80.1%,in low-degree myopia section about 81.1%;in high myopia section of female group,it accounted for about 74.2%,in moderate myopia section about 77.3%,in low-degree myopia section approximately 82.9%.The difference between 30-39 year-old men and women in each myopic degree group with the rule astigmatism percentage was not statistically significant.30-39 year-old women’s total with the rule astigmatism percentage was higher than men overall.The difference between 30-39 year-old men’s and women’s each myopic degree groups with 0-200 astigmatism percentage was not statistically significant.CONCLUSION:Among 30-39 years old dwellers in Hubei area,astigmatism in 25-150 degree accounts for the largest percentage in each myopic degree section.30-39 year-old women’s total with the rule astigmatism percentage is higher than men overall.