[Purpose/significance] By revealing the basic situation of open data policies in the local governments,this paper improves the maturity of open government data policies. [Method/process] Through literature analysis and comparative analysis,the paper selects 15 sub-provincial cities as the object of this investigation,and reviews the situation of open data policies from the perspectives of policy type,organization structure and policy objective,then analyzes the contents of policy texts from the multi-aspect of laws and regulations,open data sharing and application,construction of open data platform,open data license agreement and standards,data security,and personnel training. [Result/conclusion] Some specific suggestions are put forward from six aspects:idea of policy cluster,idea of organizational guarantee,idea of laws and regulations,idea of standard and regulation,idea of data sharing and security,and the mechanism of personnel training.