Abstract: Network capacity is one of basic problems of wireless networks, which reflects the asymptotic capacity when the number of nodes approaches infinite. Multi-channel hybrid wireless network, such as vehicular ad hoc network utilizes base station supports and multi-channel technologies. Due to randomly selecting the destination nodes, the performance of destination node may be constrained. For this kind of network sceneries, the mathematical analysis model is presented. Furthermore, the upper bound is estimated and the lower bound is constructed and calculated. The theoretical analysis results show that the time and channel resources are distributed according to the number of flows of nodes may improve the network performance. It provides one important reference for network system optimization.