The invention discloses a distance node communication implementing method in Ad Hoc network using directional antenna. The Ad Hoc network uses directional antenna, so that the security, capacity and energy efficiency of network can be improved, directive transmission and receiving are used in the Ad Hoc network to realize two-hop node long distance direct communication, the two-hop nodes can mutually complete direction location under help of center nodes. Compared with other remote communication method, the invention only need to use geometrical relationship between two-hop nodes, rather thanadditional information such as node position or synchronous information provided by GPS and other methods, thereby direction location between two-hop nodes can be completed by calculation. The emulation testifies that the invention improves network performance of the Ad Hoc network under heavier load.