Agent importance in many real each node within a node-weighted network world systems is constructed as After the factors of an effective the model of importance measurement for importance measurement for a node within a node-weighted network are analyzed, the comprehensive inlportanee measure （CIM） for a node in a nodeweighed network based on the approach of deleting node is nlodeled. And with the help of the procedure of calculating the distances among nodes on a graph, a new algorithm for this model is designed. Finally, an example is given for illustrating the application of CIM in knowledge sharing network