The agricultural ammonium polyphosphates gradually enter the field of chemical fertilizers in China as a new fertilizer in recent years,and are commonly used as a basic phosphate for high concentration liquid composite fertilizer.The pH of ammonium polyphosphate is near neutral,with good properties of low crystallization temperature,chelating,and slow release,which has great potential as the new basic phosphate.In this paper,the factors influencing the availability (solubility and mobility) of ammonium polyphosphate in soil were reviewed.The effects of hydrolysis rate,soil mineral,soil texture and moisture on the availability of ammonium polyphosphate in soil were mainly illustrated.And we also analyzed the application and development prospect of ammonium polyphosphate in agriculture.