Abstract: Fractal dimension has been widely used in the recognition of the texture images,but it lacks the ability to describe spatial information of images. In Considering the characteristic of a sonar image,the paper uses the lifting scheme to construct the Haar wavelet,and relates the lifting scheme with fractal dimension. Amalgamation of multi-scales characteristics of wavelet transform and fractal dimension increased the recognition rate. LMBP neural network is used to recognize the sonar images of different SNR. The results show that the new method has a higher classification rate and is more efficient than traditional methods.