Chinese addresses on the Internet are always non-normalized, which cannot be used directly in location-based services. To solve the problem, an algorithm to extract administrative divisions from non-normalized Chinese addresses was proposed. Firstly, preprocessing "road" feature word grouping for original data; using administrative division dictionary and moving window maximum matching algorithm, extract all possible administrative region data sets from Chinese address. Then, using the Chinese administrative divisions between the elements of the hierarchical relationship between the characteristics, the administrative set conditional set operation rule was established and the acquired data set was aggregated. using the administrative division of matching, a set of administrative division set rules were established to calculate the credibility of the administrative division. Finally, the credibility of the maximum amount of information the most complete Chinese address of the administrative divisions were obtained. By using the extracted from the Internet about 250000 Chinese address data whether the use of "road" feature word packet processing and whether to carry on the credibility calculation process was verified for the availability of the algorithm, and with the current address matching technology for comparison, the accuracy rate of 93.51%.