The invention provides a gear transmission mechanism of a simulation machine grasshopper for teaching. The gear transmission mechanism of the simulation machine grasshopper for teaching comprises a gear box, wherein the gear box is internally provided with a front gear and a rear gear, the front gear is connected with a left front foot and a right front foot, the rear gear is connected with a first left rear foot and a first right rear foot, and a plurality of transmission gears are connected between the front gear and the rear gear; and one transmission gear is connected with a transition gear, and the transition gear is connected with a driving gear. According to the gear transmission mechanism of the simulation machine grasshopper for teaching, the structure is simple, the grasshopper can be driven to simulate a grasshopper to walk forwards, the whole grasshopper structure is simple, assembly is convenient for students, the simulation machine grasshopper can be assembled with simple parts, after assembly is completed, the gear transmission mechanism of the simulation machine grasshopper for teaching can simulate actions of the grasshopper with reality to crawl by turning on the switch, and therefore the students can generate a further study interest on the gear transmission mechanism.