The traffic in the wireless networks has become diverse and fluctuating both spatially and temporally due to the emergence of new wireless applications. The purpose of this paper is to explore the impact of the wireless traffic with violent fluctuation both spatially and temporally on the performance of the wireless networks. We analyze the spatial statistics, the stability of queues and the delay of users by considering two different spatial distributions of traffic, i.e., the uniformly and non-uniformly distributed cases. The simulation results indicate that although the fluctuations of traffic when the users are clustered, reflected by the variance of total arrival rate, is much fiercer than that when the users are uniformly distributed, the stability performance is much better. Our work provides a useful reference for the design of the wireless networks when the complex spatio-temporal fluctuation of the traffic is considered.