The invention relates to a redundant path setting and working method in a quantum communication network. The method is designed in order to establish a good security protection mechanism in a quantumcommunication process. According to the method, a sender transmits signals on a working path and protection paths at the same time, the signals transmitted on the working path are taken as main signals, and the signals transmitted on the protection paths are taken as follow signals. Under the condition that the working path is normal, the sender realizes remote transmission of quantum signals by forwarding the main signals on the working path level by level. Under the condition that the working path is faulted, a proxy working path is selected from the rest protection path with the highest priority, and finally information is transmitted through the proxy working path. According to the method, the condition that unknown quantum information cannot be recovered due to damage in a transmission process can be prevented, and the information transmission security, stability and reliability in a quantum communication process are greatly improved.