(This paper analyzes the self-similar scene existing in network traffic, comments on the influence of self-similar traffic input on the time delay and jitter characteristics of queuing system, and points out that due to the long-range correlation of self-similar traffic, it can be used in a long time condition. The delay and jitter characteristics of the queuing system are improved by adding buffers. Regarding the future research direction, it is pointed out that in the research of self-similar traffic, the instantaneous function research of the system and the research of response control)