In modern high-tech wars， electronic attack weapons cover almost all military communication frequency bands， forming a new "soft" and "hard" electronic attack situation. Wireless communication is the main means of communication in modern war， the anti-jamming ability determines the combat effectiveness of weapon system. Multi-antenna can provide extra degree-of-freedom in spatial domain， and jamming signal can be effectively mitigated by exploiting the degree-of-freedom in spatial domain. In this paper， we investigate the application and simulation of the anti-jamming technique using multiple receiving antennas based on Wiener filter theory. To gain further insight， we analyze the geometry model in the high signal-to-noise ratio region. Computer simulation shows that the spatial anti-jamming based on Wiener filter can effectively mitigate the effect caused by jamming signal.