中文摘要：

从动力学机制的角度，对传统的病毒传染模型SIR和SIS的特点和动力学传播过程进行了分析，指出了其中的不足，在此基础上提出了符合计算机病毒传播机制的分阶段传播模型PSIDR。基于小世界网络和无尺度网络，对该模型的传播过程进行了大量仿真研究，对病毒在该模型下的传播动力学过程给出理论预测，为制定抵抗病毒的策略提供参考。

英文摘要：

Based on the dynamics mechanism, the traditional virus characteristics and dynamics of the epidem- ic SIR and SIS model are analyzed and deficiencies are found. A new computer virus epidemic model named as Progress Susceptible Infected Detected Removed （PSIDR） is presented to mimic the spreading the virus on the network. Numerical simulations are carried out in the small world network and mechanism of the scale-free network. Virus spreading dynamics process on PSIDR model is predicted theoretically and some guidelines for anti-virus are proposed.