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Digital City concept put forward from the California Science Center in the United States, U.S. Vice President Al Gore in 1998, entitled \The Earth Digital City is a stage in the process of Digital Earth, its main goal is to achieve the use of digital technology to build the city, the development of the city, and ultimately achieve sustainable urban development. The digital city public service platform is based on such a social demand, a network open for public users of geographic information services. To show the form of an open city overview, urban planning and construction, infrastructure construction, and land management, population management, urban elements, while providing users the shortest path query, hot information queries, such as a series of practical functions. In this paper, high-tech zones in Panzhihua City geographic information public service platform for digital city construction platform based Reference abroad within the digital city construction, design and realization of a geographic information system-based digital city public service platform. Construction of the platform based on the OpenGIS the GeoServer components, and strictly comply with the OGC specifications, in the conventional map operation based on the introduction of the statistics and summary, topology analysis, time series analysis, thematic map production, enterprise information management, and the map is closely related to the practicality features that plays an important role in supporting the government decision-making, urban planning and economic construction, the article focuses on the design and realization of this part of the feature. The system provides an interface to call a popular WebService technology, front-end mainstream Ajax technology without refreshing effect. Function to meet current demand; performance caching mechanism, allows the system to handle a large number of requests in a short period of time, and the data is returned. The system was developed using the Java language, has a strong cross-platform, common server operating system can run. The same time, due to the timely processing of user requests and generate a lot of pictures (map data) is sent to the user, so the systems have significant advantages in performance, more functions at the same time you want to pay attention to the improvement of the performance; bandwidth should adequate protection, it is able to meet the current network environment, but in order to better feel to the user, the system want to send data necessary optimization and processing. Digital City is a city of real space and digital space on City Informatization in the process of increasing integration, it is conducive to improve the efficiency of government work, and administrative transparency, to improve the business operating environment and expand market space, while at work, life, travel, etc. all aspects of better services to the public. GIS is a powerful digital city means of science and technology, and promote the construction of digital cities based on the OpenGIS the Digital City will speed up the pace of urban digital toward the standardization and internationalization.
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