Section of 5 test grooves and landforms of scarps along fault at eastern piedmont of the Luoshan Mt.are analysed and studied comprehensively. It is showed that a few young scarps with free surfaces along the slopes of eastern piedmont of the Luoshan Mt.are backside walls of gravity landslides,with no relation to the fault motion. The time before present of the last rupture event along faults at the eastern piedmont of the Luoshan Mt. is (2 105±175)a. The occurrence probability of M_S ≥ 7.0 earthquakes along the fault in future 50 year is estimated.