Based on data of field investigation in major area of Lenglongling fault zone,geometric characteristics and slip rate of the fault zone are studied.The results show that the fault zone is an active one in Holocene and consists of a group of secondary faults.According to its total characteristic,the fault zone can be divided into 3 segments.The average left lateral horizontal slip rates of the fault zone since middle Pleistocene are calculated.The horizontal slip rate in middle Pleistocene is 2.14~4.64 mm/a,the rate in Epipleistocene is 2.86~4.07 mm/a,the rate in Holocene is 3.35~4.62 mm/a.The vertical slip rate is 0.38 mm/a since Holocene.