Abstract: The Song Mountain and Jigong Mountain,belonging to the middle and south parts of Henan Province in China.Song Mountain is National Forest Park and world famous Tourism Area;Jigong Mountain is National Natural Reserve and one of the famous scenic spot in China.On basis of getting the up-to-date flora to a data of study in the open country,the flora of Song Mountain and Jigong Mountain has carried out comparison research,making use of mathematic model to have calculated comparability coefficient.Study result shows:Song Mountain has seed plants of 126 families,586 genera and 1335 species,the flora gives first place to temperate zone component,and having the certain tropical species in the same way.The flora of Song Mountain has a more tightness contact with Northwest China and North China.The Jigong Mountain has seed plants 157 families,675 genera 1583 species,though the temperate zone component holds the certain proportion,tropical species is rich,the transition characteristic is obvious,the area relation is closer with Central China and East China,incline towards north subtropics flora areas,having explained that the climate and physical geography environment is the key element of dividing into two area flora.The similarity in Song Mountain and Jigong Mountain flora shows the temperate species occupying certain advantage,indicating that deciduous broad-leaved forest in temperate zone component still is a relatively stable forest cover of two area types.