This paper analyses the malpractices that take the provincial capitals as comprehensive, single center: the separation of department and region; the waste of natural and economic resource; the common of industry’s structure. The author points out ways and steps on the separation and transform of functional types in provincial capitals. A inseparable contact zone and strong influence zone are defined. It has made out determination about urban function of provincial capitals and the judge about the leading cities in every provinces of China, at the same time, the author puts forward the thinking of the construction and deploy about functional structure in provincial capitals: strengthening administrative, cultural function、transferring partial functions of provincial capitals; observing and studying the functions of provincial capitals from the urban system.