The invention discloses a multiservice QoS route selection method of a power wide-area communication network. The method comprises the steps of establishing a power wide-area communication network multiservice QoS route selection model and selecting the shortest route of each service transmission. The problem that the network load is unbalanced is solved, the multiservice is more efficient in the transmission of the wide-area communication network, thereby guaranteeing the transmission reliability and the real-time of each service information in the wide-area protection communication network.