Abstract: Based on the ample N、P、K fertilizer, Adopting the method of spraying leaf’surface, the experiments was conducted to investigate the effect of 8 kinds of trace element fertilizers （Zn、Fe、Mo、Co、B、Cu、Se、Mn ）mixed spraying on the Yield of forage and quality of Medicago sativa, The purpose is by the examination of spraying trace elements, In order to provide the fine pastuer for different productive uses, The results showed that spraying trace elements could remarkably increase the yield of forage and the leaf stem ratio (LS), significantly increase crude fiber’s contents, markedly affect the crude fat’s contents, promoted the enhancement of crude ash’s contents and reduced nitrogen-free extract’s contents, but the effect of spraying trace elements on crude protein and phosphorus’s contents of Medicago sativa was inapparent.