The present paper deals with a systematical investigation of vanadium contents in main soil types of China.The results are summarized as follows:1.The total vanadium content of the main soils in China ranged from 9 to 266μg/g,averaging 86μg/g.Parent materials was the decisive factor affecting the total vanadium contenss.For instance,in red earths different in the parent materials,the total vanadium content was in the sequence of the red earth derived from basalt>that from phyllite>that from Q₂ red clay>that from granite>that from limestone>that from Tertiary red sandstone>that from rhyolite.2.In general,total vanadium contents and soluble vanadium contents of soil profiles were not consistent.It is revealed that they could be accumulated or enriched in surface soil or subsoil,and in some conditions,they could be distributed in homogeneous state.3.Total iron content of soil was one of the most important factors affecting distribution and mobilization of vanadium in soils.Vanadium in soils as largely combined closely with iron oxides,except amorphous iron oxides.The soluble vanadium as combined with amorphous iron oxides in soils.