Today,with the economic globalization acceleratting increasingly,i t is imp ossible for any enterprise to win the competitive advantage with one' s single f orce.they should implement SCM,and set up strategic alliance with other enterpri ses to promote one' s own core competition.This article analyzed the interactio nal mechanism between SCM and the enterprise core competition.At the same time i t discussed the new question and challenge which Middle&Small enterprise confron ted under the SCM in our country.finally,the article put forward some countermea su...