Objective　To evaluate the endemic situation of schistosomiasis prevalence in the national surveillance sits in Jiangsu Province for guidelines to improve the surveillance system that can be reliable and sensitive. Methods　By the requirements in the National Schistosomiasis Monitoring Scheme(2014 Edition),we conducted monitoring over schistosomiasis prevalence in Jiangsu Province from 2015 through 2019,and analyzed the surveillance data,including infection rate in population, areas with snails by statistics and spatial clustering. Results　The average seropositive rate for schistosomiasis was 1. 55% in local residents and 0. 51% in floating population between 2015 and 2019. The seropositive rate was increased by 46. 45% in 2016 compared to that in 2015 and then showed a decreasing trend. Nevertheless,annul seropositive rate was higher in local residents than in floating population(χ 2 = 42. 74,120. 51,74. 50,73. 67 and 60. 64,respectively,all P <0. 01). No positive case was detected by fecal test. Annual survey revealed average snail areas being 229. 60 hm2,where snails were emerged in 1. 75 hm2,and re-emerged in 57. 22 hm2. The yearly average snail density was 0. 013 0/0. 1m2. No infected snails were found. Snail areas and snail density was increased to a certain degree,and snail areas were mainly limited within the regions of Nanjing-Zhenjiang-Yangzhou Town. Conclusion　Schistosomiasis control strategies in Jiangsu in the past years have produced obvious effects on the way to the criteria of schistosomiasis interruption across the province. However,the surveillance system should be perfected in following prevention and control work in order to prevent reemergence of schistosomiasis.