The invention relates to a method for carrying on failure restoration using shared backup channel in grating network, the method presets a backup channel when creating the primary channel, the backup channel presetting uses share mode, that is to say, the same resources can be used as the preset resources for several backup channels, when the primary channel is failed, it uses the label exchanging protocol to execute the signaling activating process of the backup channel, when one of the shared backup channel is activated, the other backup channels which carry on resources sharing to the activated channel are removed, then calculates these backup channels again. The invention uses sharing protection, upgrades the utilization rate of resources, because of the preset backup channel, the process activating the backup channel is simple and quick.