| Taking the flora of Wula Mountain as study object, some geobotany principle disciplines were managed to investigate and study the geography distribution of seed plants here from taxonomic grade of family, genera and species. Then taking the results compared with the flora of Inner Mongolia, the conclusions are as follows: there are 426 species of seed plants in Wula Mountain, which belong to 227 genera and 67families (excluding cultivated plants). Among them there are 3 families, 5 genera, 7species in Gymnosperm; 58 families, 187 genera, 345 species in Dicotyledon and 6 families, 35 genera, 74 species in Monocotyledon. Wula Mountain lies in the transitional area of desert grassland and typical grassland. Therefore, there are so many kinds of environments for plants; the geographical component of the flora also complicated. The temperate components are absolutely dominant: 67.7% of the non world components in families; 80.9% of the non world components in genera and 91.8% of the non world components in species. The plants of herbage here are dominant in life styles. In water ecotypes, the mesophytes are most primary, the xerophils are primary either, that means the water condition is worse, it is semi-drought area here. The peculiar existence is not high and frangibility of the flora is obvious in Wula Mountain. Compared with the flora of Langshan Mountain, Jiufengshan Mountain and Daqingshan Mountain, the kindred relationship between them have been analyzed: the flora of Wula Mountain has nearest kindred relationship with Daqingshan Mountain in families and genera, but with Jiufengshan Mountain in species, the flora of Langshan Mountain doesn't have so near relation with it. 70 new record species are found in the research also.
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