Abstract: The Daliushu dam site in the Heishanxia Gorge of the Yellow River is located in the middle of Zhongwei-Tongxin overthrust nappe fracture zone,which is 1.5km apart from the seismogenic fault F201.In the damsite area,the fracture zone is composed of many faults,and the faults can be divided into main faults and branch faults,which have a close relation with the fault F201.The results of statistic indicates that the rupturing effects as branch fracture,secondary fracture will be appeared around the 3-5km area apart from seismogenic fault when the Earthquakes with Ms ≥7.0 happen in the Qinghai-Tibet Plateau and its margins.Since late Pleistocene,the earthquake rupture events have happened along the fault F201 time after time,and the Daliushu dam site is located in the branch fracture zone when the earthquakes with Ms ≥7.0 happen,so it is possible for the engineering rupturing.Analysis result of 3D finite element indicates that the dislocation ratio of the fault F93,F39 and F40 to the fault F201 arrives at 14.38%,12.0% and 9.8% separately,when the rupturing effects of fault F201 happens.