The mass propagation techniques in vitro were studied for the new cultivars of Cymbidium hybridium with longterm flowering characteristic introduced from Korea. The results showed that the optimal proliferation medium for C. hybridium was MS + BA 0. 5 mg/L + NAA 0. 2 mg/L. Being cultured on which the effective shoots for rooting were relative higher with average 14. 89 individuals per bottle,the average shoot height were relative higher with average height 7. 10 cm,and the shoots grew well. The optimal medi...