Aiming at the property of long distant transmission of short wave communication, in order to solved these problem of big spending and high delay time for high frequency (HF) wide area network (WAN), according to the idea of cross layer design and composite route protocol, on the basis of Extended ARP is presented, put forward HFDSR improve project. Then xARP and HFDSR are implemented using OPNET simulation software, and building net model of HF WAN. The performance of HFDSR is analyzed, and compared to that of the standard DSR and OLSR. The results of study are proposed providing reference for HF WAN routing protocols design.