Abstract: Consumers and producers, as participants in the market, have similar behaviors. The two are “mirror” of each other and can be simulated using three methods: logical analysis, geometric analysis and mathematical analysis. Each of the three methods has its own characteristics and can deepen the understanding of problems from multiple angles. Producers' production analysis and cost analysis are also “mirror” analysis. Under certain conditions, production function and cost function can be converted into function and inverse function relationship. Overall, the application of “mirror” analysis is conducive to the resolution of economic issues.