The region information of images is used by image segmentation based on C-V model, but features reflecting the detail of images such as edge information is ignored. For getting better results of image segmentation, it is particularly important to deal with these details. The amplitude of an image is larger in the edge region and smaller in the homogeneous region. It can be used to reflect the edge information of an image. By incorporating edge information into C-V model, using both the information of homogeneous regions and the edge information to control the active contours, it will obtaia better results of segmentation. The proposed model can overcome some disadvantages of C-V model, and achieve better image segmentation for those images that have the intensity inhomogeneity in backgrounds or weak edges.