Abstract: Objective To investigate the infection rate of schistosomiasis among floating population in Jiading and assess hazard level of the potential spreading.Methods People from epidemic areas in Malu and Huangdu were investigated for schistosomiasis to get the infection situation.Results A total of 1 477 people involved in this survey had serological positive rate being 4.54%, with one positive case in etiology monitoring(1.49%). The highest serological positive rate existed among people at age 30-40(7.38%)and mainly among those with only primary education(5.48%)as education background was concerned and before they came to Shanghai farmers among them were with the highest positive rate(7.60%). And in general, migrants from Hubei province had the highest positive serum rate (7.47%). Conclusion Floating population from schistosomiasis epidemic areas bring potential threat to Jiading District and we should continue to strengthen monitoring work on floating staff， especially on those from uncontrolled schistosomiasis area, then preventing the source of infection.