Abstract: The urbanization has been developing fast since 1980's, which resulting in rapidly changes of urban patterns. The change of urban patterns not only reflects the change of direction and development scale of a very vague and rough city, but also shows the relation between a city and its natual environment and regional spatial structure. But up to now we still depict the urban pattern in qualitative methods, resulting in study in urban pattern. So it is important to find a quantitative way to describe urban pattern. A re search of quantitative analysis on urban pattern can not only strength theoretical research of urban spatial structure and urbanization, but also provide scientific bases, including regulation of urban development direction, development scale , and development speed. This paper applies quantitative methods to measure and classify urban pattern. And then according to results of classification, we analyze background and mechanism of various urban patterns in order to provide scientific reference basis for urban development plan in urbanization process.

Key words: urban pattern, pattern measure, pattern classification, pattern analysis