The invention discloses an ID-based wireless multi-hop network key management method which is applicable to a safety application protocol when a WAPI frame method (TePA, an access control method basedon the ternary peer-to-peer identification) is applied in a concrete network containing a WLAN, a WMAN and a WPAN. The key management method of the invention comprises the steps of key generation,key distribution, key storage, key modification and key revocation. The invention solves the technical problems that the prior pre-share-key based key management method is not suitable for larger networks and the PKI-based key management method is not suitable for wireless multi-hop networks; the public-key system and the ternary structure are adopted, thereby improving the security and the performance of the wireless multi-hop networks.