In order to deal with the forged image using content-aware resizing, the content-aware resizing detection algorithm based on statistic characteristics of probability map is proposed in this paper. The method uses the probability map to reflect whether the image has been processed by content-aware resizing operation. In addition the proposed integral projection and local statistic characteristics are used to detect the tampered image. Trained by classifier, this method can then identify the content-aware resizing forgery more effectively. The experimental results reveal that the proposed detection algorithm can distinguish between original images and manipulation images with high detection accuracy.