As affected by suspended particles such as haze in the atmosphere, images taken outdoors often suffer from low contrast and low visibility. The existing dehazing methods fail to make full use of the local feature information of the image，and there are problems such as incomplete dehazing and loss of image details. For this reason, this paper proposes a T-shaped image dehazing network based on wavelet transform and attention mechanism. Specifically, the proposed network obtains the edge detail features of the hazy image by performing multiple discrete wavelet decomposition and reconstruction on the image and proposes a feature attention module that takes into account both the global feature and the local information extraction of the image, which strengthens the network’s learning in image visual perception and detail texture. Secondly, in the process of feature extraction, a T-shaped method is proposed to obtain multi-scale image features, which expands the network’s representation ability. Finally, color balance is performed on the reconstructed clear image to obtain the final restored image. A large number of experimental results in synthetic data sets and real data sets show that the network proposed has superior performance when compared with other existing network models.