Abstract: The Concocted Affair of the SO-called National Tooth Care Group is more than just something connected to commerce only．What matters a lot more than it is that the mass media哦widely involved in this scandal．Mass media exerted its strong influence upon the public’s view and choice by concocting and controlling the so．called“medium au． thority”．It reveals the ungraceful fact that mass media seemed to have abandoned their public responsibilities while they reaped quite a few benefit from this affair．