Abstract: Traditional game theory used in making jamming strategy has great defpendence on prior knowledge, ideal procedure, poor actual electronic warfare instruction and rough decision results. To solve these problems a novel game theory analysis method is proposed in this paper. Firstly the paper builds a game winning fuction which can reflect the game result. Then closed-form analysis and Monte Carlo simulation are used to roundly analyze the game procedure between noise jamming and phased array radar. finaly the method is applied to a real example, giving best strategy of anti-noise jamming and phased array radar respectively. The results of simulation prove validity and utility of the method. The paper also provides a new idea for game theory used in radar-contermeasures fields.