Abstract:This survey is aimed at cattle and sheep grazing in swamp grasslands and the infection of Paramphistomiasis in Haiyan County. The results were: swamp grassland grazing households accounted for 9.27% of the total number of grazing households in the county, and grazing cattle and sheep accounted for 10.93% and 12.65% of the total. 77.78% of cattle and sheep on the swamp grasslands are infected with the Paramphistomiasis, while the infection rates of cattle and sheep are 59.26% and 48.15%; the mixed infection rate of cattle and sheep are 40.74%; and the infection rates of individual cattle and sheep are 14.83% and 17.04% respectively. The results also shows that professional and technical personnel there were lack of the knowledge about Paramphistomiasis, and the infection rate shows great regional differences, and the infection rate of cattle and sheep have a rising trend. It proves that the parasiticide is unsatisfactory in reduce eggs rate. The promotion of prevention knowledge and technical training for this parasitosis. and development and screening of parasiticide, and control of wetland pond snail have become very urgent in the future.
