The present invention discloses a method for connection-error handling of service in an Automatically Switched Optical Network (ASON), to resolve the technical problems that the conventional method for connection-error handling cannot realize rapid automatic configuration and the efficiency is low and other problems. Through automatically completing the configuration of the connection-error handling information of the start node and the end node by the control plane, the present invention overcomes the defect that manual setting is error prone; it is rapid and simple to implement the interaction of the error handling information between the start node and the end node by protocol exchange. Because the present invention can automatically complete the configuration of the connection-error handling information of the start node and the end node by the control plane, and can cite, when a connection error alarm occurs, the error prevent information of the original connection over a new connection of the service under the conditions of different error handling policies, the present invention enhances the system availability and the service robustness to a great extent.