Based on the history data of related social and economical data from the statistical yearbook from 2007 to 2016 and the air quality factors data monthly from online testing website from Dec. 2014 to Nov. 2016, the six cites in Shandong Peninsula Blue Economic Zone are selected as the research samples. Its distribution characteristics of social and economical factors and air quality are analyzed by the bivariate correlation analysis. The results show that urban population affects illustrately the total GDP and the soot emissions, in which the former influence increases greatly. In addition, the influence of urban population on chemical oxygen demand and ammonia emissions appears to increase firstly and then decline. At the same time, the influence of chemical oxygen demand and ammonia nitrogen emissions on sulfur dioxide emissions increases significantly, while the latter has a more significant influence. In addition, O3 becomes the new top major air pollutants besides PM10 and PM2.5.