Objective To establish a new inbred strain and observe the growth, fecundity and some biological characteristics of DA rats under a stable raising condition. Methods 15 pairs of DA rats were raised to observe their fecundity and 25 pairs of DA rats were raised to examine their blood Indices. The rats were imported from production stock in Danmark. Results The inbred strain of DA rats was successfully established. DA rats provided a litter size of 5.5 rats in average, survival rate of 90.8 %, and the blood indices were close to those of Wistar rats. Conclutsion DA rats have been adapted to the conditions of our animal center and the introduced strain is successful. However,attention should be paid to that some biochemical indices and organ weight and organ cofficents are affected by sex.