Micro blogs run by the government agencies in China are of increasingly importance to improve the efficiency of the government administration, enhance government-civilian interaction, and accelerate the transformation of government functions etc. Government microblog is a special type of microblogs of government affairs, and the “focus” relationship formed within them plays a key role in maintaining relationships and exchanging resources in the real world. The research object is provincial government microblogs in China. Using social network analysis approaches, this paper focuses on the relationship network of the provincial government microblogs and analyses the overall attribute, substructure attribute and individual attribute of it in the whole government microblogs relationship network. Based on these results, the paper draws the conclusion with the overall characteristics, classification, and the influence of provincial government microblogs in China. Finally, the suggestions for the sound development of provincial government microblogs are also provided.