Under the social transformation background,college students face the pressure of study,employment and emotion problems.Some weak college students fall easily into psychological crisis.Though all circles pay attention to this issue and make intervention,the result is not ideal.This study begins from the forming mechanism and effect of college students'psychological crisis,explores constructing an efficient protection system for college students'psychological crisis.The protection system is multi-dimensional and mainly preventive.It moves forward the psychological crisis intervention,preventing the psychological crisis from its source,and thus prevent psychological crisis,lessen the negative effect on the college students,family and universities.