The multiple management modes of floating population's family plannin g are analyzed.A Cooperation Mode of Floating Population's Family Planning Manag ement and Service(CMMS) based on information technology,supporting and cooperati ng with the existing modes,is suggested.Operating mechanism in inflow place and outflow place under CMMS is described.The CMMS is an ideal mode to realize manag ement synchronization of the population separating from their household,service service in current residence,guest population's management and service in native place.