Abstract: To investigate the effect of arid and hot environment on elements levels of oil workers.Method: The levels of sixteen elements in serum,hair and urine of oil workers were determined by using TY-70 ICP(France).Results: The levels of Li,Ca,Zn,and Se in serum of all objects in summer were significant lower than that in winter,and the levels of Li and Fe in serum of well drilling worker in summer were significant lower than that of the control;the levels of Li,Na,K,Mg,Ca,Sr in urine of all objects in summer time were significant higher than that in winter,and the concentration of Li,Na,Mg,Ca,Al in urine of well drilling worker in summer were significant higher than that of the control;The levels of Ca,Fe,Zn,Al in hair of oil worker in summer time were significant lower than that in the winter,and the levels of K,Ca,Fe,Se,P in hair of oil workers in summer time were significant than that of the control.Conclusion: The results indicated that the arid and hot environment could cause reduction of the levels of elements in oil workers.