Abstract: This paper deals with the Holocene activities of the He an Mountain piedmont fault on the basis of morphometric data of nickpoints and terraces along 45 gullies strentching across the mountain flank and of inclinations for various parts of the fault scarp.We have come to the conclusion that there were at least 8 events in the Holocene,the last one leading to an offset of the Great Wall 400 years ago and to nickpoints on the gullies,at a distance of about 5 m from the fault scarp.Under the condition that the last event for the fault was associated with Ping Luo earthquake of 1739 we may estimate the average rate of headward erosion for the gullies resulting from uplifting of the fault scarp to be 2.0-2.5cm/yr.Based on the distance between the two neighbouring nickpoints,the average rate mentioned above and the climate of China showing a tendance to have come drier and drier in the last 5000 years,we have worked out the cycles of activity for the Helan Mountain piedmont fault as shown in Table 3.From relative height for varios terraces near the fault scarp we have calculated the amplitude of movement of the fault occurring during each cycle (Table 4).