Abstract: The lost P from the soils would pose a risk to water quality. In this study, 101 soils were collected from the vegetable soils in the Guangdong. The contents of Olsen-P, Bray-P and CaCl₂-P were respectively determined so that phosphorus leaching critical values was determined in different texture soils. The results showed that: there was a significant linear relationship between Olsen- P and CaCl₂- P. CaCl₂- P increased sharply with the increase of Olsen-P, which was called phosphorus leaching criterion. The criterion values of loamy clay was 79.74 mg/kg, the values of clay loam was 51.08 mg/kg，the values of sandy clay loam was 43.99 mg/kg, the values of sandy loam was 8.63 mg/kg. The order of criterion values was loamy clay＞clay loam＞sandy clay loam＞sandy loam, which was in agreement with the order of clay content. There was a significant linear relationship between Bray-P and CaCl₂-P in the sandy clay loam soils while there was not in the rest three texture soils, but there was not change point in the sandy clay loam. The Olsen-P was as the criterion value of phosphorus leaching.