Abstract: This paper deals with the floristic statistics, analysis, regionalization and studying on the floristic origion of the seed plants in the North China Region (excluding Qingling Mts.)There are five main conclusions as follows: (1) North China is the richest region of the north part of China in flora with about 3358 species belong to 151 families and 919 genera. (2) It is chiefly temperate in nature and has a certain transitional nature with tropical and subtropical flora, for it has more than 66 of various temperate elements and about 24 of tropical ele-ments. (3) It has a lower level ofendemism with only 8 or 10 genera, about 600 species and vari-ety endemic to this region, that is only 10 and 15 of the total of the genera and species. (4) According to the structure of geographical elements of species, the distribution of local endemic species and some physiogeographical features, the region may be floristically divided into 4 subregions and 11 districts: subregions of Liaodong-Shandong Peninsula, North China Plain, North China Mountain and Loess Plateau in the northern Shaanxi. (5) Based on the analysis of paleobotanical data and recent floristic data, the origion of this flora in North China may be as-sumed as autochotonous since Tertiary up to date. Besides, many elements are from Northeast Asia, Himalaya and Hengduan Mts respectively, but only a few from Central Asia or arid-re-gion of Northwest China.

Key words: North China region