The competition in telecom market becomes more severe. In order to response to the complicated competition, we should research the competitors’ behavior response model. By means of understanding competitors’ aims, strategies, advantages and disadvantages and collecting their information as more as possible, we can predict competitors’ possible action and whether they will response to others’ behaviors, such as decreasing price, increasing promotion or introducing new products, or not. By this way, we can judge the competitors’ response model, which can benefit us in many ways, such as setting up effective competition strategies, avoiding strong responses of competitors, defending themselves from competitors, protecting themselves with strong defense against attack, judging the possibilities and speed of competitors’ response, and so on. As a result, we can constitute effective market strategies and decrease the negative effects of competitors’ response.