To research on degradation effect of organic phosphorus and inorganic phosphorus of Bucillus megaterium JD-2,the differences of soil available phosphorus among Bucillus megaterium JD-2,Lactic acid bacillus,Bacillus subtilis was compared.Effect of different concentration of Bucillus megaterium JD-2 on soil available phosphorus was studied.The results indicated that Bucillus megaterium JD-2 had a strong degradation ability of organic phosphorus and inorganic phosphorus.The available phosphorus content was 25 times and 22 times as much as the control group.Bucillus megaterium JD-2 had the best degradation phosphorus ability and soil available phosphorus content increased from 19.0 mg/kg to 34.5mg/kg.In the soil,different concentration of Bucillus megaterium JD-2 had the effect on dissolving phosphorus,but the best initial concentration was 10⁶CFU/g in the soil.