Positioning is the key point of city brand building. Positioning theory advocates winning customers' hearts and minds, and occupying the first place in the niche market. Based on this theory, I locate through analysis the problems of unclear positioning and insufficient tapping of potentialities in the city brand building of Dazhou prefecture, an old revolutionary base in Sichuan province. Based on Dazhou prefectural social and economic development, I propose four solutions to Dazhou's city brand building: to win hearts and minds and position precisely; to tap the potentialities and make in-depth interpretations; to focus on core industries and develop key products; to develop hardware and software aspects simultaneously. Then, it is suggested Dazhou should adopt a “re-positioning”and industrial-focus strategy in her city brand building project, and follow a brand development logic of product brand to industrial brand and to city brand.