本文运用企业大数据，通过对企业注册资本总额、企业资本空间流向、企业资本行业投向以及京津冀企业联合专利申请量和授权量等指标的分析，得知京津冀三地产业分工基础及协同状况较好；北京资本外溢效应显著，已成为三地互投的资本辐射中心；京津冀三地联合创新集中在基础设施、科技服务、制造业等领域，北京成为三地联合创新的核心驱动区域。在此基础上，本文提出了相应的对策建议。
Using the Enterprise Big Data，this research makes an analysis of the registered capital，the spatial flow of registered capital，the investment orientation among industries，the amount of joint patent application and patent grant. This research draws conclusions：the base of industrial division and coordination of Beijing-Tianjin-Hebei is good；the spillover of capital of Beijing is significant and Beijing has already become the radiant center in the region of Beijing-Tianjin-Hebei；the joint patent application and patent grant mainly focuses on the industries including infrastructure，technological service and manufacturing. Beijing is the core impetus of the joint innovation among Beijing，Tianjin and Hebei. Based on the conclusions above，some suggestions are put forward.
