Objective:To master pupils’growth condition in Chongqing and its rules and to research the development trends of them. Methods:We applied the advanced time series analysis combined with two custom evaluation indicators of growth condi- tions to establish the models of growth condition and to predict the short-term trends. Results:AR(1)model can ideally describe the growth condition of pupils and its prediction precisely was much higher. Conclusion:1.Time series analysis can ideally describe the growth condition of pupils and predict its future development trends

which should be frequently applied. 2. Schools should take care of the health growth of youngsters.