Abstract:After a test on the cunninghamia lanceolata trees of one-year-growns. Two-year-growns and treerear-growns,in the tests,tress were disposde with different ways,veride from adopting different chemical medideine such as 100 ppm GA. BA. 10% B. J. F. H solution and 20% B. J. F. H solution, then compare with each,it can be found that all these chemical medicine have no effeet no one-rear-growns and tree-rear- growns cunninghamia lanceolata it is apperent that the B. J. F. H solution with water by 1: 20 proportion can mafe the time of the male fowers blooming and seeding ahead. While 10% of B. J. F. H can make the time of the female flowers-blooming and seeding ahead.