The goal of schistosomiasis control in China is to control the disease in all amenable areas by interrupting transmission(Yuan, 1992), and has been given high priority in public health work through many years of sustained efforts.By the end of 1989,schistosomiasis was declared eradicated in the municipality of Shanghai, in the provinces of Guangdong and Fujian, and in the autonomous region of Guangxi. Among 378 countries formerly endemic for schistosomiasis, the disease has been eradicated in 150, is under control in 110 and remains  endemic in 118. In the provinces, municipalities and autonomous regions where schistosomiasis has been eradicated , the prevalence is now zero, and in Zhejiang Province only 202 infected persons were reported in 1989. The average prevalance in the endemic provinces- five in the central lake region and two in the western mountainous region - was 4.6% in 1989(Bureau of Endemic Disease, Ministry of Public Health,Peoples Republic of China,1990).