Abstract: The rapid propagation technology of begonia × elatior was optimized with leaves as the explants. The results showed that MS was the suitable basic medium for adventitious bud differentiation，the differentiation rate reached 100%，and the differentiation coefficient reached 10. 8. 1. 0 mg / L 6- BA + 0. 2 mg/L NAA was beneficial to the differentiation of adventitious buds，the effective adventitious bud differentiation coefficient reached 6. 8. The liquid medium was favorable for the formation of effective buds of the adventitious buds. 1/2 MS+0. 1 mg/L NAA was suitable for root inducing. The survival rate of test tube seedlings grown on the seedling substrate for 20 days could reach 50%.

Key words: begonia × elatior, leaf isolated culture, rapid propagation, adventitious bud inducing, rooting