Abstract: In this research ,six varieties oncidium (langxi、honeysugar、milliongolds、redcat、paris oncidium and spider oncidium)were tested by using difference illumination、temperature、fertilization proportionment and plant growth regulator, optimum illumination intension for flower buds’s bourgeon is 19000lx, optimum temperature (day temperature～night temperature) 28～17℃，the optimum proportionment of fertileization: N:P:K=10:30:20，hasten blossom in this condition, honey sugar、milliongolds and paris oncidium’s flower rate can achieve 70% above, langxi is 55% and redcat can achieve 66%. The buds’ differentiation of spider oncidium must be treated by low temperature, after 60 days by using the treatment of 25～15℃(day～night),flowerbuds rate can achieve 72.3%. In this paper, 6-BA has no obvious effect on the flowerbuds rate.