Abstract: The main maize germplasm in Hebei Province were analyzed. The result indicated that the proportion of improved Reid germplasm tended to increase from 1980 to 1998 and decrease after 1999. Lancaster germplasm tended to decrease from 1980 to 1988 and begin to increase after 1999. The proportion change of Tongsipingtou germplasm submitted to be wave upon wave and it got to peak value in 1990s then went down. The proportion of Ludahonggu was the lowest all along. Maize germplasm in Hebei Province were divided into 5 maize heterosis groups and 8 sub groups, such as improved Reid group, Lancaster group, Tongsipingtou group, Ludahonggu group and other group. Heterosis utilized models include 12 dominate ones and 18 subdominates.