Abstract:The life cycle form spectrum of Camptotheca acuminate and Taxus chinensis var. mairei in the mixed communities were studied. The results showed that the score and proportion of both are 0 in the S life cycle form. The highest principal components score of V life cycle form among C.acuminate and T.chinensis var. mairei communities is mountain plot 2, pure forest V life cycle form is the lowest, C life cycle form is the same. The life cycle form proportion of C.acuminate community, according to mountain plot, sloping land plot, flat land plot and pure forest plot, the general trend is V life cycle form rise and C life cycle form drop, which compose the life cycle form spectrum composition of C.acuminate mixed communities. The T.chinensis var. mairei community life cycle form spectrum showed that the V life cycle form is the lowest between mountain plot and sloping land plot and the C life cycle form is the highest. However, the V life cycle is the highest among the pure forest plot and the C life cycle form is the lowest.