Based on the investigation data of region geology and the remote sensing interpretation technique of earth satellite, the environment evolrement and the forming process of Jingjiang River in the middle reaches of Yangtze River and the basin of Twain-Hu (Jianghan-Dongting) Plain Baisn were comprehensively researched, it revealed the influence of the pull -apart activity in Huazhong (Middle China) Craton in new global construct movement to surface processes, there are clarified the relation synchronously evolvement from with the valley water system ,to surface processes the region environment and the basin of Twain-Hu(Jianghan -Dongting) Plain, the discuss into the earth dynamic mechanism for the mountain -basin -plain -river -lake -rivulet's coupling system and the environment evolvement.