Abstract:Intestinal parasites not only significantly affect the health and survival status of the host, but also potentially affect the development of the host population . In order to monitor the health status of semi-free- range and wild PereDa- vid, s Deerin China and study the intestinal parasitic infection status ofPere David, s Deer , in the summer of2019, a non-in- vasive sampling method was used to collect487fresh feces from semi-free- range and three wild Pere David, s Deer popula- tions inNanhaiziMilu Park in Beiiing, and analyze the parasitic infection status of Pere David, s Deer . According to the McMaster counting method, the parasitic eggs in the feces of Pere David, s Deer population were counted by microscopy. The results showed:Pere David, s Deer was mainly infected by Strongylata-like , Eimeria sp. , Moniezia sp. and Trichuris sp. The infection rate and abundance of Strongylata-like and Moniezia sp. in Dongting Lake National Nature Reserve of Yueyang, Hunan were more serious than those in other sites , and the aggregation degree of these two parasites was lower than that in other sites , indicating that the host-parasite dynamic stability balance was in imbalance crisis , and there was a possibility of parasite outbreak. It is suggested that the management personnel of East Dongting Lake Reserve should strengthen the monitoring and management of Dongting population to prevent the outbreak of parasites . This study pro-vides data reference for scientific management and potential wild habitat selection of Pere David' s Deer population in China .