Diet composition of Raccoon Dog(Nyctereutes procyonoides)was checked by analyzing 130 Raccoon Dog dung collected from August 2007 to July 2008 in the Dalaihu Nature Reserve,inter Mongolia China.Both percentage occurrence and percentage of relative weight of remains were measured for analysis.Birds(39.81% occurrence vs.52.60% relative weight)and rodents(22.69% occurrence vs.25.85% relative weight)were the major food items of Raccoon Dog.Other food item components were insects(26.39% occurrence vs.13.32% relative weight),plants(7.41% occurrence vs.1.39% relative weight),fishes(2.31% occurrence vs.5.79% relative weight),shrimps(0.93% occurrence vs.0.85% relative weight),and mollusk(0.46% occurrence vs.0.20% relative weight).Ungulates were not found in the dung.The results from both measurements were not difference,both of them can be used on analysis of food items of Raccoon Dog.