Abstract: To enhance the watermark robustness and application，a new embedding strategy for the watermark is proposed based on DWT domain.The algorithm is proposed based on the influence of the selection for wavelet bases and the robustness of watermarking.In selects wavelet Haar base，according to watermark’s length and human visual characteristic，with wavelet transform，the image is decomposed into suitable classification，watermark components with different strength are inserted into different wavelet coefficients based on the results of classification.Experimental results show that the proposed algorithm is robust to some image processing operations and Joint Photographic Experts Group（JPEG）.