Thirteen electrical sounding profiles have been made along the fracture zone of the earthquake of magnitude 7.5 in Changme,Ganshu Province. The results of these profiles are used to study the distribution of the fracture zone of the earthquake and its relation with the distribution of Quaternary faults.The relation between Quaternary faults and older ones are studied by analysing geology in Changma and its surrounding area.All of this is followed by the analysis of the structural condition and the ways of the function of the structural stress.