Abstract: Objective To realize the sanitation and epidemic prevention status of the floating population,provide the science gist to prevent the infections and contrestemps in the crowd.Methods To select the outskirts of a city where the floating population was collective,take spot check from whole group.Results Doors of 1 388,2 746 people were investigated,61.76% came from a remote and backward place with low degree of literacy.Their health knowledge of sanitation,self protection ability,safety producing consciousness and law general knowledge were very amallness.Conclusion The floating population had some characteristics that went against to carry out the sanitation and epidemic prevention.To change the bad factors,on the one hand lived on the government,on the other hand,lived on every department to make a concerted effort to carry out th prevention and cure step in order to gain the aim.