As a kind of proactive worms in the P2P network

the artificial-activation worm is studied in terms of attacking mechanism in this paper.The propagation procedure of this kind of worm consists of four stages:information collection

penetration

self propulsion and artificial activation.It is found that the worm is a kind of topology-awareness worms.Based on the analysis on the attacking mechanism of this kind of worms

the mathematical model of artificial-activation P2P proactive worm propagation is proposed.Further

the sufficient condition of worm propagation attaining the worm free equilibrium is deduced from the model in applying Epidemiology.Large scale simulation experiments validate this proposed model.