Abstract: Taking Zhuxi vanadium deposit in the Qiandong area，Guizhou province as an example，the concentration of major and trace element of rocks and sandstone are analyzed and surveyed，and the contents and ratios of the characteristic elements are discussed.The results showed that the maximum and minimum δ Ce value of the sample correspond to the lowest and highest levels of vanadium respectively; seawater environment with aerobic-anoxic continuous changing results in forming ore bodies only at the bottom of Jiumenchong Group with the same lithologic section.V in ores shows in multivalent form mainly due to the ladder faults at the narrow ocean bottom of Nanhua.Hypoxic seawater with V-riched organic matter results in ore-forming of vanadium.Passive continental margin，repeatedly eustatic cycles and redox interface serve as ancient geographical environments for vanadium deposits.

Key words: Zhuxi vanadium deposit, Palaeo-geographic environment, Eustatic sea-level change