Abstract: The differences between virtual growth model and real growth status of Sabina vulgaris were investigated in this study.The results showed that the change of growth of internode and branching angle of Sabina vulgaris showed the property of stage and non uniform speed,and the growth of the apical meristem showed priority.According to the stage change features of the growth of internode and branching angle of Sabina vulgaris in actual situation,the constrained random function was used to optimize the growth model of virtual Sabina vulgaris and to implement the simulation of prior growth of apical meristem.The visualization results showed that the model was highly consistent with the growth of real Sabina vulgaris,and the prior growth of apical meristem has been implemented,density and distribution were shown to be nature.