A state reporting control method, applied to a stateful path computation element, PCE, comprising: setting and notifying (S10) an initial subscription state of a label switched path, LSP, state report of a path computation client, PCC node in a process of session initialization with the PCC node; and sending (S20) a subscription update request to the PCC node to subscribe or unsubscribe the LSP state report of the PCC node; wherein the sending (S20) a subscription update request to the PCC node to subscribe or unsubscribe the LSP state report of the PCC node comprises: sending, after restarting, subscription update requests successively to nodes in a PCC node list to subscribe the LSP state report of the PCC node; sending, after switching from a stateless operation mode to a stateful operation mode, subscription update requests to nodes in the PCC node list to subscribe the LSP state report of the PCC node; and sending, after switching from the stateful operation mode to the stateless operation mode, subscription update requests to the nodes in the PCC node list to unsubscribe the LSP state report of the PCC node; wherein the sending (S20) a subscription update request to the PCC node to subscribe or unsubscribe the LSP state report of the PCC node further comprises: sending a PCUpt message to the PCC node, and carrying a flag bit, for indicating to subscribe or unsubscribe the LSP state report of any LSP on the PCC node, in a stateful PCE request parameters, SRP, object of the PCUpt message. setting and notifying (S10) an initial subscription state of a label switched path, LSP, state report of a path computation client, PCC node in a process of session initialization with the PCC node; and sending (S20) a subscription update request to the PCC node to subscribe or unsubscribe the LSP state report of the PCC node; wherein the sending (S20) a subscription update request to the PCC node to subscribe or unsubscribe the LSP state report of the PCC node comprises: sending, after restarting, subscription update requests successively to nodes in a PCC node list to subscribe the LSP state report of the PCC node; sending, after switching from a stateless operation mode to a stateful operation mode, subscription update requests to nodes in the PCC node list to subscribe the LSP state report of the PCC node; and sending, after switching from the stateful operation mode to the stateless operation mode, subscription update requests to the nodes in the PCC node list to unsubscribe the LSP state report of the PCC node; sending, after restarting, subscription update requests successively to nodes in a PCC node list to subscribe the LSP state report of the PCC node; sending, after switching from a stateless operation mode to a stateful operation mode, subscription update requests to nodes in the PCC node list to subscribe the LSP state report of the PCC node; and sending, after switching from the stateful operation mode to the stateless operation mode, subscription update requests to the nodes in the PCC node list to unsubscribe the LSP state report of the PCC node; wherein the sending (S20) a subscription update request to the PCC node to subscribe or unsubscribe the LSP state report of the PCC node further comprises: sending a PCUpt message to the PCC node, and carrying a flag bit, for indicating to subscribe or unsubscribe the LSP state report of any LSP on the PCC node, in a stateful PCE request parameters, SRP, object of the PCUpt message. <EOS>