City image is the business card of a city，and it is one of the most important factors influencing the city development. This report compares the five first-tier cities，Beijing，Shanghai，Tianjin，Guangzhou，and Shenzhen，from the aspects of ecological image，cultural image，economic image，government image，and image promotion. Generally，as the well-recognized first-tier cities，Beijing and Shanghai show advantages in culture，economy，and government image；Shenzhen and Tianjin develop rapidly in recent years，but still have a long way to go in constructing good culture and ecology images. This report gives suggestions on the development of the five first-tier cities. First of all，a city’s comprehensive competitiveness should not be ignored while developing the economy. Secondly，a city should accelerate the cultivation of talents and the attractiveness to talents. Moreover，new media should be taken full advantage of in creating a positive government image. Finally，cities’ historical and cultural characteristics should be explored and displayed，in order to build an integrated and unique city image.