Abstract: Objective To analyze the growth and development status and related influencing factors of children aged 8-10 in Datong City,to explore effective intervention measures,and to provide the scientific basis for the prevention and treatment of abnormal growth and development of children. Methods The stratified cluster sampling was used to select school-age children aged 8-10 in Datong City as the survey objects. The growth and development information of children was collected by questionnaire survey,physical examination,and blood biochemical test. The descriptive analysis method was used to analyze the growth and development of children,and univariate and multivariate analysis methods were used to analyze the influencing factors of growth development retardation. Results Data from 2 359 school-age children aged 8-10 were obtained,with an effective rate of 97.76%. There were 871 cases of developmental delay,with a rate of 36.92%. Among them,374 cases （15.85%）had growth retardation with a height-for-age Z-score< -2,260 cases （11.02%）had underweight with a weight-for-age Z-score<-2,and 237 cases （10.05%）had emaciation with a weight-for-height Z-score<-2. The results of multivariate Logistic regression analysis showed that preterm birth （OR=1.963）,primary caregiver being grandparents （OR=2.154）,poor dietary habits （OR=2.994）,inadequate sleep （OR=3.330）,insufficient physical activity （OR=4.285）,calcium deficiency （OR=1.444）,iron deficiency （OR=2.886）,and poor mental health （OR=1.471）were influencing factors for growth development retardation in school-age children aged 8-10. Conclusions The rate of growth development retardation in school-age children aged 8-10 in Datong City is high,which is affected by many factors. It is necessary to pay attention to key groups according to the abnormal growth and development and its influencing factors,establish good life behavior habits,detect calcium,iron,and other trace elements,and pay attention to children’s mental health,to improve their growth and development health level.

Key words: Growth and development, School age, Child, Influencing factor