Abstract: Aiming at the wireless local networks,a reservation-based stochastic multi-channel multiple access protocol with collision avoidance is presented.It integrates the ideas of multi-channel and reservation.This system is analyzed by means of the mean-value based approach.And the formula for the mean value is obtained when the grouping messages are sent successfully.In the case of the same tobal bandwidth,the numerical results show that the performance is better than that of CSMA protocol with single channel.