The invention provides a limb assembling method for an emulational machine grasshopper used for teaching. The method comprises the following steps that a front left foot of the emulational machine grasshopper is connected with a gear transmission mechanism through a front left crank, a front right foot is connected with the gear transmission mechanism through a front right crank, a first rear left foot and a second rear left foot are connected with the gear transmission mechanism through a rear left crank, a first rear right foot and a second rear right foot are connected with the gear transmission mechanism through a rear right crank, the front left crank is connected with a left fixing rod through a first connecting rod, the front right crank is connected with a right fixing rod through a second connecting rod, the first rear left foot is connected with the left fixing rod through a third connecting rod, the second rear left foot is connected with the left fixing rod through a fourth connecting rod, the first rear right foot is connected with the right fixing rod through a fifth connecting rod, and the second rear right foot is connected with the right fixing rod through a sixth connecting rod. By means of the limb assembling method for the emulational machine grasshopper used for teaching, the whole structure is simple, assembly is convenient for students, and the emulational machine grasshopper can be assembled by using the simple parts.