ESR method was nas used for dating the F
1 and F
7 faults in Zhanghewan resovoir distict, Hebeiprovince. The results are comparable with that obtained by TL dating before.This indicaes the feasiblity of the method for dating Quaternary faults. As the measured age values are greater than the characteristicage value of an active fault, 1.1×10
4, the faults F
1 and F
7 do not belong to active faults. This conclusion is supported by other geological observations as well.