Abstract: In order to enhance the test efficiency of information security system,analysis of the attributes of attackers,offensive rules and offensive planning products is very important.Based on the study of attackers' individual attributes,attackers' task-oriented polymerization rules are analyzed and described by polymer operator,mobile operator and splitting operator in the paper.Then an attacker's behavior planning algorithm is prompted.It contains the planning steps,behavior and dynamic evolution of the planning process.Finally applicaion of an example is demonstrated to prove the feasibility of the algorithm.