Objective: to understand for dental caries period, our children to 144 8-11 years of clinical investigation analysis, in order to prevent treatment. Methods: the method of sampling, 144 students aged 8-11 field sampling survey, fill in the form. Use a database of SPSS, the group of children were statistically analyzed. Results: the 144 student caries rate is 72.92%, male caries rate is 61.97%, female caries rate is 82.56%. Female caries rate is higher than male, a statistically significant difference (p < 0.05). 9 years ahead, women were male caries are women, caries 261m than men, men and women, no obvious difference between the statistically significant (p > 0.05). Results: during the period of high for dental caries rate and caries should be strengthened, and adopt effective oral health education of prevention and treatment measures.