Most UHV dense transmission lines are located in remote areas such as Shagehuang and mountainous areas. There are many extreme natural factors such as strong sandstorm, snowstorm and large temperature difference, and strong electromagnetic interference is serious. The complex natural environment and electromagnetic environment have great influence on communication chan­nels and equipment operation, and it is difficult to guarantee the transmission quality of communication networks. In order to ensure the stable operation of power services such as on-line monitoring and mobile inspection of transmission lines, this paper proposes a wireless signal enhancement method based on multi­scale filtering, which adaptively eliminates noise and interference in the signal without complex transformation of the original signal, and realizes the end-to­end stability enhancement of wireless communication carrying power services.