As to the weak antijamming capability of existing fracture extraction method,a new extraction method for incline fractur e is proposed based on edge detection.Firstly,the contrast-limited histogram equalization is used to improve the contrast of logging image.Secondly,in order to improve the stabi lity of extraction,adaptive filter and morphology processing are used for the detected edge image.Lastly,the frac ture is extracted by dimension reduction Hough Transform.The experimental results demonstrate tha t the method has high accuracy of the extracted fracture,high stability and fewer free param eters.The proposed method has achieved efficient extraction of incline fracture.