The phosphorus content in some soils of São Paulo State was studied in total form and fraction soluble in H2SO4 0.05 N and in the solution (COOH)2 0.25 N (COOK)2 0.75 N. The profiles were chosen according to their petrographic origins (21). In the total P2O5, the soils were groupel in arbitrary classes, and it shows that sandstone soils have the lowest content and diabase, the highest. Relating the data with the study of diabase decomposition, it seems that the P2O5, increases during rock weathering and is maintained in the profile. Comparing São Paulo soils with others with same geological origins but submitted to different climates, the content of total P2O5 is approximate the same. The diabase soils of São Paulo, called "terra-roxa", have a higher content in total phosphorus than other soils. Probably soils with the same origin, have a high content in this element since P2O5 is closely related to rock-mother and not to climate. The total phosphorus content in the profile is somewhat uniform with a small increase at surface. Soluble phosphate decreases with depth and its content is low as compared with the total one. The 0.05 N H2SO4 extracts less phosphate than the oxalate method. Studying the MnO, the data show that our soils have low content and follow the same trend of other soils with similar origin. The manganese extracted with HNO3 0,01 N is too small for any conclusions except that it decreases with depth.