Abstract: Mint ang 70-611 came from F1 of CP49 50×F 134 a nd passed thr ough a“five seedling nursery”system to be selected and bred by Institute of Sugarcane,Fujian Academy of Agricultural Sciences in 1970.and has become amain cultiv ar as the third generation after F134 at Fujian and Yunnan provinces.It has accumutively distributed in 0.41 million hectar es area with 700 million yuan economic and social benefit Recently,its rato oning ability degener ate and sugar content descend at latemilling stage.So we induced Mintang 70-611 to bloom in a Zhangzhou city,and disposed 3 hybridized combinations:M int ang 70-611×Erianthus arundinaceum Retz(or Saccharum spontaneum L.),Mintang 70-611×Sugarcane distant F1 and Mintang 70-611×cultivars(or midmaterials).From the mentioned F1,Some good mid materials have been selected. So Mintang 70-611 is being improved and abreeding route of“gener ation progress”is brought about.