Abstract: Aiming at the absence of autonomic on existent intrusion tolerance system, this paper proposed an intrusion tolerance system model based on autonomic computing.The critical models included detection evaluation of intrusion, autonomic learning of autonomic manager and intrusion tactics of autonomic intrusion centre;and construct danger function of intrusion process, and generate the danger function value of intrusion, the autonomic manager compare or adjust the danger function value and intrusion threshold, dynamic to take appropriate intrusion measures.Finally, the experimentation is given to explain the autonomic intrusion tolerance.