Different inorganic phosphorus forms (Ads-P,Al-P,Fe-P,Obs-P and Ca-P) of soil taken from Xianghai wetland were analyzed. Ca-P was found to be the major component of the total inorganic phosphorus and found that its content in each soil layer was highest. Except Ads-P, the content of all the other forms of inorganic phosphorus decreased with the depth of soil increasing. The results also show that Al-P,Fe-P and Obs-P were influenced significantly by pH, and pH and them had significant negative correlation, however, Ads-P and Ca-P were not almost affected by pH.