Abstract: Objective: To Enhance the X-ray image. Method: Apply multiple complementary method on image enhancement. First of all, using the Laplacian method to highlight image details, and then using the gradient method projecting edge. Then using the smoothed gradient image masks Laplacian image, through the high increase filter obtains sharpen image. And then, the dynamic gray level range of the image sharpening is increased by the gray level transformation. Finally, comparing the results of traditional algorithm with the algorithm proposed in this paper. The algorithm proposed in this paper enhanced the X-ray medical image significantly, has the great advantage compared to the traditional algorithm. The detail of the enhanced image is clearer, the implementation effect is better than any kind traditional algorithm. Conclusion: The algorithm proposed in this paper has certain theoretical and practical applied value on X-ray medical image.