Abstract: Wireless traffic channel access control algorithm based on statistical multiplexing is very important for improving the capacity of wireless communication network, link utilization and system stability. According to the one-time-discriminate used on existing iteration traffic access control algorithm, which may cause the shortage of the traffic channel been accepted by system acceptance, the improved scheme been analyzed and simulated by flow model is put forward by repeatedly discrimination in silent period with setting the cache. The simulation results show that the improved algorithm obviously reduces the loss probability of data caused by multi-service simultaneous burst.