Abstract: The existing key management scheme applied to wireless sensor network hardly considers the phenomena that unreliability of wireless links and the packet loss rate in the network. In this paper an anti-compromise and energy effective authentication encryption algorithm（STAE） is presented, using the methods of sub-transmission, OFB block cipher, authentication and reconstruct the information, the safety and efficiency of the data transfer and reconstruction are enhanced, and it ensures that the network can effectively resist the behaviour such as listening, data tampering, and DoS attacks while there are certain packet loss rate and part of the compromise node in the network. The simulation results show that the STAE algorithm has a large advantage about the security communication and the network energy consumption.