Serum Zn, Na, Ca, Mg, K, and Cu contents of 40 male adults were determined during the four seasons in Urumchi by Atomic absorption spectro-photometry.The results showed that the content of Cu was 87.3?11.50~99.6?6.90 ?g%; Zn 85.8?29.35~118.3? 20.88ug%; K 3.9?0.31~5.1 ? 0.42meq/L; Na 137.9?9.60~146.2?2.70meq/L;Ca9.2?0.53~10.3?0.88mg%; Mg 1.9?0.11~ 2.2?0.14mg% respectively.