A method for controlling multi-layer label switched paths, LSPs, applied to Multi-Layer Networks, MLN, comprising: acquiring (S101) an LSP addition request; wherein the LSP addition request carries identifier information for identifying an association group, to which an LSP is to be added, and information for indicating a type of the LSP; wherein the type of the LSP comprises an upper-layer or a lower-layer; and adding (S102) the LSP to the association group in response to the LSP addition request, wherein the association group comprises an upper-layer LSP and a number of lower-layer LSPs; wherein the upper-layer LSP and the number of lower-layer LSPs in the association group are associated by using an ASSOCIATION object, the ASSOCIATION object is in a format of including a field for identifying a type of the ASSOCIATION object, and the field is used to indicate that the association group is a layer association group; wherein the method is characterized by comprising: receiving an upper-layer LSP deletion request; searching the layer association group for at least one lower-layer LSP associated with the upper-layer LSP requested to be deleted in the upper-layer LSP deletion request, in response to the upper-layer LSP deletion request; and deleting the upper-layer LSP requested to be deleted in the upper-layer LSP deletion request, and deleting the at least one low-layer LSP associated with the upper-layer LSP requested to be deleted in the upper-layer LSP deletion request, in batches. acquiring (S101) an LSP addition request; wherein the LSP addition request carries identifier information for identifying an association group, to which an LSP is to be added, and information for indicating a type of the LSP; wherein the type of the LSP comprises an upper-layer or a lower-layer; and adding (S102) the LSP to the association group in response to the LSP addition request, wherein the association group comprises an upper-layer LSP and a number of lower-layer LSPs; wherein the upper-layer LSP and the number of lower-layer LSPs in the association group are associated by using an ASSOCIATION object, the ASSOCIATION object is in a format of including a field for identifying a type of the ASSOCIATION object, and the field is used to indicate that the association group is a layer association group; wherein the method is characterized by comprising: receiving an upper-layer LSP deletion request; searching the layer association group for at least one lower-layer LSP associated with the upper-layer LSP requested to be deleted in the upper-layer LSP deletion request, in response to the upper-layer LSP deletion request; and deleting the upper-layer LSP requested to be deleted in the upper-layer LSP deletion request, and deleting the at least one low-layer LSP associated with the upper-layer LSP requested to be deleted in the upper-layer LSP deletion request, in batches. receiving an upper-layer LSP deletion request; searching the layer association group for at least one lower-layer LSP associated with the upper-layer LSP requested to be deleted in the upper-layer LSP deletion request, in response to the upper-layer LSP deletion request; and deleting the upper-layer LSP requested to be deleted in the upper-layer LSP deletion request, and deleting the at least one low-layer LSP associated with the upper-layer LSP requested to be deleted in the upper-layer LSP deletion request, in batches. <EOS>