The ecological bit width of higher vocational colleges shows the basic information of college’s resource intake,resource utilization,resource output and energy conversion.Through measurement of ecological bit width of some four-year-basis universities in Zhejiang Province and by means of a contrastive study,this paper intuitively finds the convergences in ecological bit width and resource demands formed by homogenized competitions among the higher vocational colleges.Based on the above analysis,it also proposes the strategies of ecological bit width optimization.