Abstract: The effects of 6-BA on promoting axillary bud germination and growth of new shoots and the dynamic changes of endogenous hormones were studied with‘Tianhong 2’Fuji cultivars grafted on dwarfing inter-rootstocks in the spring of that year. The results showed that the early growth of single bud weight was slow，and rapid after 4 days treated by 300 mg · L^-1 6-BA. The axillary buds treated by 6-BA apparently expanded，germinated，and growed to 1 cm long on the fifth day，the seventh day，and the ninth to tenth day respectively. Approximate 15 buds germinated from 5 to 45 cm down the shoot tip at treatment on average，and the percent of nursery trees with germinated buds was 100%. On the one hand，IAA content decreased obviously at the initial stage of treatment（approximate 2 days）and then rised slowly， meanwhile，the content of ZRsand GAs rised rapidly，however，both the two decreased 6 to 8 days later in the bud. On the other hand，IAA content continued to reduce significantly and ZRs content decreased slightly after treatment，both the content of IAA and ZRs rised 6 days later，the trend of GAs content was oposite in the stem. Besides，ABA content decreased both in the bud and stem. Thus，spraying 6-BA could make ZRs transport to axillary bud from local stem，inhibit IAA to transport to the main stem from shoot tip，promote the IAA in the axillary bud to transport to the main stem，and then the axillary bud germinated. As the effect of 6-BA decreased，the curves of 4 hormones content began to fall back on the sixth day or the eighth day，meanwhile，hormones started to reach new balance with the germination and growth of axillary buds.