Abstract: In order to characterize the antagonisn of zinc agains tarsenic, induced micronuclei a bone marrow m icronucleus test in mice was condicted the results were as follows coexposure of zinc and arsenic to mice could induce. a doseffict antagonism of zinc against arsenic-induced miconuclei inm ice There for E the findings gurrantee a scientific evidence for both further study and field intervention of zinc against A rsenictoxcity.