Abstract: In the Chinese fir slasharea of the Xiashu Forest Experimental Centre,3 treatments of varied shading conditions (including full exposure,half shade and full shade) were conducted over the newly felling stumps in the late winter. From spring to early summer the sprouting processes of dormant buds were observed and the sprouted bud samples were collected for hormone analyses periodically. It was shown that the dormant buds on the stumps of Chinese fir began to sprout when the ground surface temperature rose up to around 20℃,and their sprouting amounts were closely related to the kinds and quantities of endogenous hormones within them. In all treatments the curves of GA3 contents in the sprouting buds collected on various dates were the single-peak curves of the same shape,only the time needed for the peak values to appear were different in different treatments.Nevertheless,in all treatments the peak values of GA3 content appeared at the time when the ground surface temperature reached 30.7～32.6℃,and were mainly in accordance with the dates when the daily sprouting amounts of bud in the treatments reached their peak points respectively. Thus it can be seen that GA3 exerted a great influence to break the dormancy of bud and to promote the continuous sprouting from the Chinese fir stump.ZT also play a part in facilitating the beginning of sprouting,while the contents of ABA and IAA were very low and unimportant for sprouting.