The samples were collected from 505 stored grain enterprises, including grain depots，flour mills, rice mills，feed mills and some farmer and so on which are located in 77 cities in twelve provinces, including Hainan, Guangdong, Yunnan, Fujian, Zhejiang, Hunan, Hubei, Henan, Shandong, Liaoning, Shanxi, Heilongjiang, which are main grain storage eco-regions in China. Cryptolestes ferrugineus (Stephens) and ahasverus advena (Waltl) occurred in all of the investigated provinces. Typhaea stercorea were collected from all of the provinces except Heilongjiang, Hunan and Shanxi province. The detection rates of A. advena, T. stercorea and C. ferrugineus were 18.81%, 11.48% and 45.94% respectively. The detection rate of C. ferrugineus was much higher than that of A. advena and T. stercore. The detection rate of C. ferrugineus in Hainan province was similar with that of A. advena and T. stercorea. The detection rate of C. ferrugineus in Shandong province was less than that of A. advena. The occurrence rates of C. ferrugineus and A. advena in Heilongjiang were the same. The detection rate of C. ferrugineus (14.29–69.81%) was much higher than A. advena (3.03–6.17%) and T. stercorea (0–33.92%) in other provinces. The occurrence rate of C. ferrugineus was much higher than that of A. advena and T. stercorea in most provinces in China.