The major purpose of this paper is an attempt to analyze the structure of the central place system in Hsinchu region. The first step is to rank 276 central places into seven orders by means of the indices of centrality, which is defined by the complexities and the number of establish-ments of central functions. In the second step, we then discuss the disparity among these orders in terms of the theoretical and real characteristics of the quantitative and spatial distribution. Finally, we also analyze the preference of shopping places who live in the complementary region each different center. All of the three steps of research are conducted by putting three hypotheses to test. The results of this research are summarized as follows: 1. In Hsinchu region, distinct regularities were not manifested in the quantitative relation-ships among the order of centers, neither in the pattern of spatial distribution in the central place system as predicted by the theoretical model. In the aspect of quantity relationship, the 5th and the 6th center show a greater amount than the normal, while those under the 4th rank display the opposite phenomenon. As to the spatial distribution, most of the centers in the higher orders are concentrated in the western and the north-western areas. On the other hand, in the eastern and the south-eastern areas, the lower orders are separately. There is a very close relationships between the patterns described above and the characteristics of distribution of population density, tranportation networks and the degree of the average slope of the earth surface. 2. There are more distinct differences among the orders of centers in the number of establishments than in the complexities of central functions for the higher classes of centers. As to the lower classes of centers, distinct differences among the orders of centers are not manifested in the number of establishments, neither in the complexities of central functions. 3. Networks of personal connections, attraction of the largest city, welfare centers of soldiers, government employees and teachers, are the three most important factors that attract a large number of consumers to the higher classes of centers for purchasing goods and receiving services. The phenomenon above has caused the greater variety and number of establishments of central functions in those larger centers. Exactly for the same reason, the opposite phenomenon occurs in the small and the middle centers.