A method for establishing a forwarding adjacency - label switched path FA-LSP connection, applied to a first node that serves as the penultimate hop node in an FA-LSP to be established, the method comprising the step: acquiring a first connection establishment request message, wherein the first connection establishment request message comprises a signal type of the FA-LSP to be established, an adaptation mode from a signal of the FA-LSP to a link on a server layer network, an adaptation relationship from a client signal to a signal of the FA-LSP and an adaptation mode corresponding to the adaptation relationship; the method being characterized in that it further comprises the steps: determining, according to the signal type of the FA-LSP to be established, the adaptation mode from the signal of the FA-LSP to the link on the server layer network, the adaptation relationship from the client signal to the signal of the FA-LSP, the adaptation mode corresponding to the adaptation relationship and to link peer information saved by the first node, a destination link between the first node and a destination node of the FA-LSP to be established, wherein the port of the destination link on the destination node in the FA-LSP to be established supports the signal type of the FA-LSP to be established and the adaptation mode from the signal of the FA-LSP to the link on the server layer network, and further supports the adaptation relationship from the client signal to the signal of the FA-LSP and the adaptation mode corresponding to the adaptation relationship; and sending a second connection establishment request message to the destination node, wherein the second connection establishment request message carries destination link information, so that the destination node establishes a connection to the first node through the destination link according to the second connection establishment request message. acquiring a first connection establishment request message, wherein the first connection establishment request message comprises a signal type of the FA-LSP to be established, an adaptation mode from a signal of the FA-LSP to a link on a server layer network, an adaptation relationship from a client signal to a signal of the FA-LSP and an adaptation mode corresponding to the adaptation relationship; the method being characterized in that it further comprises the steps: determining, according to the signal type of the FA-LSP to be established, the adaptation mode from the signal of the FA-LSP to the link on the server layer network, the adaptation relationship from the client signal to the signal of the FA-LSP, the adaptation mode corresponding to the adaptation relationship and to link peer information saved by the first node, a destination link between the first node and a destination node of the FA-LSP to be established, wherein the port of the destination link on the destination node in the FA-LSP to be established supports the signal type of the FA-LSP to be established and the adaptation mode from the signal of the FA-LSP to the link on the server layer network, and further supports the adaptation relationship from the client signal to the signal of the FA-LSP and the adaptation mode corresponding to the adaptation relationship; and sending a second connection establishment request message to the destination node, wherein the second connection establishment request message carries destination link information, so that the destination node establishes a connection to the first node through the destination link according to the second connection establishment request message. determining, according to the signal type of the FA-LSP to be established, the adaptation mode from the signal of the FA-LSP to the link on the server layer network, the adaptation relationship from the client signal to the signal of the FA-LSP, the adaptation mode corresponding to the adaptation relationship and to link peer information saved by the first node, a destination link between the first node and a destination node of the FA-LSP to be established, wherein the port of the destination link on the destination node in the FA-LSP to be established supports the signal type of the FA-LSP to be established and the adaptation mode from the signal of the FA-LSP to the link on the server layer network, and further supports the adaptation relationship from the client signal to the signal of the FA-LSP and the adaptation mode corresponding to the adaptation relationship; and sending a second connection establishment request message to the destination node, wherein the second connection establishment request message carries destination link information, so that the destination node establishes a connection to the first node through the destination link according to the second connection establishment request message.