Based on intensity model, this study analyzed and measured the economic contact intensity among Beijing-Tianjin-Hebei, and simulated the agglomeration and radiation influence among different cities. The results show that Beijing and Tianjin are two economic growth poles; the economic relationships between Beijing-Tianjin, Beijing-Langfang, Tiangjin-Cangzhou, and Beijing-Baoding are relatively tight, while Being and Tianjin have the largest economic contact intensity and outward function. The results also indicate that geographical position has certain association with economic contact intensity, Zhangjiakou, Chengde, Xingtai, Handan and Qinghuangdao have smaller economic radiation from Beijing and Tianjin. The economic radiation of Tianjin is relatively smaller than Beijing. At the end this paper provided some suggestions on Beijing-Tianjin-Hebei Collaborative Development.%本文运用引力模型，对京津冀城市群协同发展的经济联系强度进行研究分析，并测算了京津冀各城市的集聚与辐射影响力，结果表明，北京和天津是京津冀城市群的两个经济增长极，北京—天津、北京—廊坊、天津—沧州、北京-保定的经济联系较为紧密，其中北京和天津之间的城市引力最大，城市外向功能量最大；京津冀各城市的地理位置与经济联系强度有一定的关系，在地理位置上离北京、天津较远的城市，如张家口、承德、邢台、邯郸、秦皇岛等城市，受到北京和天津的经济辐射较小；从中心城市的辐射程度的差异来讲，天津对各城市经济辐射的差异小于北京。通过研究结论，本文最后提出了京津冀协同发展的对策建议。
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