Abstract:OBJECTIVE To understand the state of children's height development in Haizhu District of Guangzhou and analyze its related influencing factors. METHODS A random selection of 904 children aged 3 to 12 years in Haizhu District was conducted for physical measurements and questionnaire surveys of parents were conducted to obtain data on children's height and influencing factors. RESULTS The average heights of boys and girls in the 3~5 year-old group, boys in the 6-year-old group, boys and girls in the 7~8 year-old group, and 9-year-old boys were lower than the national level (P<0.05). 65% of children were consistent with their genetic height, those whose actual height proved to be lower than genetic height took up a percentage of 21.6% while another 13.4% was taller than genetic height. Mother's height, whether the body type is obese, often eats calcium tablets and drinks milk, history of chronic diseases and daily exercise time were the factors affecting height (P<0.05). CONCLUSION The overall level of height development of children in Haizhu District of Guangzhou is relatively low. Most children do not reach their height growth potential. The effect of environmental factors on height should be valued, and appropriate intervention measures should be taken to promote children's height.