Objective To learn the botany character in the process of introduction cultivation of Panax japonicus C. A. Mey. var. major （Burk. ），and conduct produce according to the GAP. Methods We analysed the plant height，main stem diameter，tiller number，leaf number，petiole length，leaf length，leaf width，flower and fruit number in the prosess of one year and two years old after the plants was introducted cultivation. Results We found that it had different speed in different development stage for the different plant organ in one or two years old plants. and results showed the regular pattern of first period increasing and later period stabilizing. Conclusion The Panax japonicus has a abundant variation about the botany，and has different botany character and different advantage features. The results showed that the plant could be good material for selective breeding of good varieties.