In many cases, the image acquisition devices have a limited dynamic range, which is lower than one encounter in the real world. The capture image from the camera can not reflect the high dynamic range. According to different exposure time of images in the same scene, it apply the Laplace sharpening the images and enhancing their details, and it use wavelet transform based on weighted rule of fusion to fuse those images. Consequently, the fused image retains effective information from those different exposure images. The resolution of the fusion image is better, and those images of the bright and dark area have been enhanced in the fusion image. Experiment show that the method for wavelet image fusion can fuse those multiple exposure images into a high dynamic range image.