Abstract: In order to evaluate the potential for economic development in various regions of Hebei Province, accurately find the degree of the relative importance of the factors and their impact on the comprehensive development potential, the author through amendmenting the principal component analysis and using the quantitative evaluation method evaluates the ecological safety of the 11 cities in Hebei Province. The evaluation results showed that the Langfang City of Hebei Province scores 0.55, which was between ideal security and criticality safety. Other cities between the criticality safety and less secure by turns were as follows: Qinhuangdao City, Baoding City, Chengde City, Xingtai City, Tangshan City, Shijiazhuang City, Zhangjiakou City, Cangzhou City, Handan City, Hengshui City. After all, Hebei Province should improve the response level, for there were many unsafe factors of ecological environment, the ecological environment pressure intensity was big, and the city ecosystem state took on an imbalanced state.