Objective To study the trend of children's growth and development in Xi'an,and to analyze the main problems in order to provide scientific basis for formulating interventions of child health care. Methods The dynamic changes of body weight,height,head circumference,sitting height and chest circumference of children in Xi'an over the past 30 years were analyzed. Physical development indicators of children in Xi'an were compared with the national average level. Results Children's weight,height,sitting height, had increased significantly over the past 30 years in Xi'an, and head circumference and chest circumference had slightly increased. The main indicators of children's growth and development in Xi'an significantly increased,and the growth rate in Xi'an was greater than that in national area. Conclusions The growth and development of children in Xi'an has significantly improved over the past 30 years. In the future,more attention should be paid to the main growth and development of children, as well as the growth and development index and other indicators,in order to better promote children's healthy development.