[Objective] The research aimed to discuss the differences of trace elements in the viscera of yak in Qinghai Lake area.[Method] By using factor analysis method,the contents of trace elements in viscera of yak in Qinghai Lake area were comprehensively evaluated.[Result] The contents of Mg,Cu and Se in the viscera of yak in Qinghai Lake area were significantly related,while Mn content and Fe content were significantly related.The contents of trace elements in kidney of yak were highest,followed by liver,heart...