Abstract：Based on the second national land survey data of Yunnan Province, it is analyzed on difference of land structure in 4 city, 42 counties of Yunnan central urban agglomeration area based on a variety of quantitative geography model and information entropy method.The results showed that: (1) land structure of in the study area showed the difference spatial pattern of the Middle and the Eastern high, lower in Western; (2) city level and county-level land degree of centralization was not quite; (3) woodland, rablae land and grassland had obvious location significance, water and other land in general not significant; (4) the land-degree was higher, and the Middle and the Eastern higher the Western over all; (5) it was concluded that there was a relationship between the information entropy of land and the land diversity, which was not closely related the gross domestic product (GDP) .

Keyword：Yunnan central urban agglomeration area;land use structure;quantitative geography model;information entropy;