Due to lots of mixed traffic existing in the actual situation and the processing performance of the product limited by many factors, the performance test of communication network can generally meet the laboratory requirements, while fail to meet the actual requirements of customers. In order to evaluate the actual processing capability of the network node, a test model of performance is created. Moreover, analysis and the experimental verification of the test evaluation of the primary parameters, including throughput, mixed packet forwarding capacity, the rate of new connections, etc, of the network node are given.