The invention discloses a multi-radio frequency and channel allocation method of a multi-band power distribution and utilization wireless ad hoc network. The method comprises the following steps: determining a cluster head node in the network; forming a backbone topology network according to the cluster head node and a gateway; determining final topology of the network according to the backbone topology network and an in-cluster member determined by each cluster head node; separately performing channel allocation on the link of the backbone topology network and the links in the clusters according to the final topology network; and in a normal working process of the final topology network, performing fault recovery after it is detected that the cluster head node is ineffective. Therefore, by adoption of the multi-radio frequency and channel allocation method of the multi-band power distribution and utilization wireless ad hoc network, the overall performance of the network can be improved, thereby ensuring the quality of service of the user and improving the user experience.