A new wavelet network model for learning is obtained according to the multiresolution analysis thought in the wavelet space. Some compactly supported scaling function and wavelets are adopted as the active function in the model, so that we can obtain theoretically two criteria to determine the number of the nodes in the hidden layer, hence the trouble in traditional network in determining the unmber can be avoided. This model consists of an inital network and some subnetworks which will be incorporated duri...