The flora of wild seed plants in Baotou area was investigated, counted and arranged, and the geography distribution，life styles，water ecotypes of seed plants here from taxonomic grade of families, genera and species were analyzed. The results showed that: (1) there are 595 species of seed plants in Baotou area，which belong to 274 genera and 71 families. Among them there are 2 families, 3 genera, 5 species in gymnosperm; 69 families, 271 genera, 590 species in angiosperm, which accounted for 62.28%, 43.81% and 27.78% of all families, genera and species of angiosperms in Inner Mongolia. (2) From the point view of the composition of family and genus, the singlegenus family and fewgenera family were evident in the number of species of wild seed plants in Baotou area; (3) From the point view of the geographical component, temperate components are dominant. Herbage is dominant in life style. In water ecotype，the mesophyte is most primary，the xerophile is primary either. That means the water condition is worse and here is semidrought area.