Abstract: Abundances and spatial distributions of associated useful elements(REE、PGE、W、Mo、Au、Te)in Co-rich Crusts from Caiwei seamount are studied in this paper. The research suggests that REE content rises and Te content decreaces as the water depth increases. The research also indicates that there is no significant correlation between PGE, W, Mo, Au and seafloor topography. Distributions of associated useful elements are highly uneven at Caiwei seamount. But generally, distributions are parallel to the water depth, except that a few areas show patch distributions. Besides, enrichment areas of different associated useful elements are different.