Basing on the cognition rule of college student's mathematics model-building, combining with the teaching activities of mathematics model-building in the Chinese People's Armed Police Force Academy, the process of cognition of mathematics model-building can be generalized into token strategy, hypothesis strategy, construction strategy and adjusting strategy. And hereby, in the teaching course, it is benefit to adopt the rule based on the case of mathematics model-building, the rule fused the method of mathematics model-building, the rule posted general approach to mathematics model-building and the rule strengthened consciousness of self controlling-surveillance. And they are efficiency in the research and application of teaching reform on mathematics model-building course in the Chinese People's Armed Police Forces Academy.