Abstract:Betula albo-sinensis forest is an important type of forest vegetation of the Taibai Mountain region, distributed From 1950 to 2650m on the south slope and from 2200 to 2750m above sea level on the north slope.Using clustering analysis (UPGMA), twenty plots of Betula albo-sinensis forest were classified into seven types, i) B. albo-sinensis + Quercus liaotungensis forest ii)B. albo-sinensis +Q. liaotungensis +Pinus armandii forest; iii) B. albo-sinensis+P, armandii forest; iv) B. albo-sinensis forest; v)B. albo-sinensis P. armandii + B. utilis fargesis forest; vi) B. albo-sinensis + B. utilis +Abies fargesii forest; vii) B albo-sinensis + B. utilis forest. Seven types of B. albo-sinensis forests were regularly distributed in this order along the altitudinal gradient, but B.albo-sinensis forest always dominates and the forest structure is relatively stable.The analysis of the Betula albo-sinensis population structure, dynamics and natural regeneration indicated the Betula albo-sinensis forest was in a degrading stage.Betula albo-sinensis forests are mature or over-mature at present, artificial regeneration should be strengthened.