For the features of network user behavior

two evaluation rules of multi-scale sample entropy are used to analyze P-P flow traffic matrix.The method can reasonably explain some of the features shown in the network traffic and draw some interesting conclusions.Then a method to evaluate healthy degree of traffic time series is proposed based on analysis capacity of multi-scale sample entropy.Experiments conducted with actual network traffic and simulation network traffic show that the proposed method is simple and effective

and can accurately evaluate the healthy degree of network traffic.