Abstract: Composite growth regulators (A1, A2) could promote the differentiation of flower buds of Lilium longiflorum significantly. A2 is better than A1. Throuth treatment of A2, flower rate of Lilium longiflorum reached 100%, meanwhile flower No. per plant increased double, flower diameter increased double. Composite growth. regulators (B1,B2 ) promoted flower bud differentiation of Cyclamen persicum significantly. B2 is better than B1. After B2 treatment, the No. of flower bud of Cyclamen persicum increased 41% compared with control. Composite growth regulators (C1, C2) accelerated flower bud differentiation of Senecio cruentus. The No. of flower buds per plant with C1 treatment increased 52% compared with control.