The effect of different components of spraying liquid on growth rate of sprouting seedlings of Toona sinensis from was researched. The results showed that 6-BA and GA3 played essential roles on growth rate of sprouting seedlings（p＜0.01）. Nutrient elements had no effect on growth rate of sprouting seedlings. The effect of sugar varied greatly between different growth periods of sprouting seedlings. Regression equation of different components on growth rate was V=0.319A+0.583B+0.268C.