Abstract: Synthetic strength index of Beijing, Tianjin and 25 cities in Hebei province are calculated by using principle components analysis method in this article. On the basic of the index, grades of these cities are built and the growth-pole system about Hebei regional development is deduced with qualitative analysis.

Key words: growth-pole, principal components analysis, grade

摘要： 运用主成分分析的方法计算了北京、天津以及河北省25城市的综合实力，并依此建立了等级层次，最后结合定性分析确定了河北省区域开发的经济增长极。

关键词: 增长极, 主成分分析, 等级