Abstract: The study on natural fracture response characteristics of horizontal wells in Chang-8 sandstone reservoir in well block-17 of Jinghe oilfield has been carried out.By using the well logging,leakage data,etc,the calibration on fracture member has been done and it has been verified through production dynamic data.According to abnormal response characteristics of the conventional logging in horizontal wells,the fracture response characteristics have been obtained and then the comprehensive discrimination model has been established.The application results indicate the recognition rate of this model can be up to 80.77%,which can meet the interpretation requirements of fracture member in horizontal wells in the study area and has a better application prospect.