Reported in this paper are Fe isotope compositions of pyrites from Neo-Archean stratiform sulfide deposits，North China. Relative to IRMM-0 14, all pyrites analysed show light Fe isotope enrichment, with variations of -38.8～-13.1 ε57Fe units for those from Hebei, and -39.4～-15.1 ε57Fe units for those from Shandong. The results suggest that the Neo-Archean seawater where these sulfides originated are enriched in light Fe isotopes. As pyrites from Archean black shales worldwide show similar Fe isotope features to those from the two Chinese sulfide deposits, the enrichment of light Fe isotopes in early Precambrian ocean is likely to be regional, or even global. This is resulted from the prolonged and large-scale precipitation of iron oxides which show light Fe isotope depletion.