Since 2011，there have been three rounds of cyclical fluctuation in China’s real estate market，and housing prices in major cities have risen alternately. It has become an important part of the government’s work to prevent and resolve the risks in the real estate market. From the perspective of region and urban agglomeration，the report studies the housing prices correlation in 70 large and medium-sized cities in China. The conclusion shows that：（1）the housing prices of the first tier cities and the second tier hot cities in the eastern region are closely related；（2）Zhengzhou，Wuhan，Changsha and Nanchang in the central region constitute a relatively close network of housing prices correlation；（3）most of the correlation coefficients of urban housing prices in the western region are in the range of 0.50-0.70，and Kunming is generally highly correlated with other second tier cities in the western region；（4）the northeast region forms a housing prices related network with Shenyang as the core；（5）The housing prices correlation between urban agglomeration in the middle reaches of the Yangtze River and other urban agglomerations are generally high，and the housing prices of urban agglomerations are affected by economic factors and location factors. Finally，based on the above analysis，the report puts forward some suggestions to stabilize China’s urban real estate market.