Abstract: Using the UN COMTREADE data and constant market share model, this paper makes an empirical analysis of the factors influencing China agricultural products export to South Asia from 1992 to 2015. The results show that the expanding of import demand is the main reason for the growth of agricultural products exports to South Asia, but its effect intensity is weakening. On the whole, changing in agricultural product structure have little contribution to the growth of agricultural product export trade between China and south Asia, and even hinder export growth in some periods of time.The adaptability of export structure has improved in recent years and competitive factors play a positive role in agricultural products export. China's agricultural products export growth in south Asia is changing from demand-led to competitive-led.