Abstract: From the requirements of the land and water resource utilization and subsidence governance，it was explored a new type of urban morphology and lifestyle—building the floating city in mining subsidence waters． It was attempted to open up new ideas in order to alleviate the intensified contradiction between people and land in our country，stick to 120 million hm2 of arable land red line，research the new type of urbanization construction，realize the ecological livable“beautiful China”