The elemental correlation in Co-rich crusts from the Mid-Pacific WM1 and WX seamounts and elemental variation in different layers of the crusts were studied in this paper. Some conclusions have been reached: 1) the amount of hydrosyalite and quartz increases gradually from the lower layer to the upper layer，which is probably related to the evolution of Asian monsoons and the uplift of the malayan_Tibetan plateau; 2) the in-crease of the ratio of TFe/Fe2+ from the lower layer to the upper layer indicates that the oxidation of the crusts also increases correspondingly, which may be caused by the sinking ofthe seamounts；3) the positive correlation between the values of TFe/Fe2+and the contents of Co, Pb, As, Mn and Fe shows that these elements occur in anoxidization environment, whereas the negative correlation between the values ofTFe/Fe2+ and the contents of Ca, P, Pt and ∑REE suggests that these elements occur in a reduction environment; 4) the remarkable positive correlation between Fe and Co in these crusts is different from things of the crusts in other places, which is an unique crustal feature of this zone；5) the correlation between Co and (Fe+Mn) is greater than that between Co and Fe as well as Co and Mn; 6) P and Co almost have no correlation when the content of P in the crusts is below 1%, but they are notably negatively correlated with each other when the content of P is above 1%, which means that the enrichment of P restrains the adsorption of Co by crusts; 7) the elements of Pt, ∑REE, and Ca〖CM(46*2〗are assigned to the same group by cluster analysis, suggesting that Pt and ∑REE occur in carbonate fluorapatite,〖CM)〗 and that phosphatization plays animportant role in the enrichment of Pt and ∑REE.