A rerouting sequence planning method, comprising: calculating reference values of to-be-adjusted label switched paths, LSPs, wherein the reference values are used to denote adjusted priorities of the to-be-adjusted LSPs; selecting a to-be-adjusted LSP with a highest priority from the to-be-adjusted LSPs; determining, according to a critical value of the reference values of the to-be-adjusted LSPs and a reference value of the to-be-adjusted LSP with the highest priority, whether the to-be-adjusted LSP with the highest priority is suitable for adjustment, wherein the critical value of the reference values of the to-be-adjusted LSPs denotes a minimum reference value required for a to-be-adjusted LSP to be adjusted to a final-state LSP; and if the to-be-adjusted LSP with the highest priority is suitable for adjustment, adjusting the to-be-adjusted LSP with the highest priority to a corresponding final-state LSP; and if the to-be-adjusted LSP with the highest priority is not suitable for adjustment, selecting at least one to-be-adjusted LSP and adjusting the at least one selected to-be-adjusted LSP to a corresponding temporary LSP, the method further comprising: after the to-be-adjusted LSP is adjusted to a corresponding final-state LSP or temporary LSP, when a to-be-postprocessed list still stores a temporary LSP and an unsuccessfully adjusted to-be-adjusted LSP, using the temporary LSP and the unsuccessfully adjusted to-be-adjusted LSP in the to-be-postprocessed list as new to-be-adjusted LSPs, and performing a step of calculating reference values of the to-be-adjusted label switched paths, LSPs, wherein after the using the temporary LSP and the unsuccessfully adjusted to-be-adjusted LSP in the to-be-postprocessed list as new to-be-adjusted LSPs, the method comprises: stopping adjustment when the number of iterations of adjusting the to-be-adjusted LSPs reaches a preset maximum value; and, when the number of iterations of adjusting the to-be-adjusted LSPs does not reach the preset maximum value, performing the step of calculating the reference values of the to-be-adjusted label switched paths, LSPs. calculating reference values of to-be-adjusted label switched paths, LSPs, wherein the reference values are used to denote adjusted priorities of the to-be-adjusted LSPs; selecting a to-be-adjusted LSP with a highest priority from the to-be-adjusted LSPs; determining, according to a critical value of the reference values of the to-be-adjusted LSPs and a reference value of the to-be-adjusted LSP with the highest priority, whether the to-be-adjusted LSP with the highest priority is suitable for adjustment, wherein the critical value of the reference values of the to-be-adjusted LSPs denotes a minimum reference value required for a to-be-adjusted LSP to be adjusted to a final-state LSP; and if the to-be-adjusted LSP with the highest priority is suitable for adjustment, adjusting the to-be-adjusted LSP with the highest priority to a corresponding final-state LSP; and if the to-be-adjusted LSP with the highest priority is not suitable for adjustment, selecting at least one to-be-adjusted LSP and adjusting the at least one selected to-be-adjusted LSP to a corresponding temporary LSP, the method further comprising: after the to-be-adjusted LSP is adjusted to a corresponding final-state LSP or temporary LSP, when a to-be-postprocessed list still stores a temporary LSP and an unsuccessfully adjusted to-be-adjusted LSP, using the temporary LSP and the unsuccessfully adjusted to-be-adjusted LSP in the to-be-postprocessed list as new to-be-adjusted LSPs, and performing a step of calculating reference values of the to-be-adjusted label switched paths, LSPs, wherein after the using the temporary LSP and the unsuccessfully adjusted to-be-adjusted LSP in the to-be-postprocessed list as new to-be-adjusted LSPs, the method comprises: stopping adjustment when the number of iterations of adjusting the to-be-adjusted LSPs reaches a preset maximum value; and, when the number of iterations of adjusting the to-be-adjusted LSPs does not reach the preset maximum value, performing the step of calculating the reference values of the to-be-adjusted label switched paths, LSPs.