To provide a means to allow even a beginner to early become familiar to a monocycle and can secure the directionality of the monocycle during the running.

An assist tool for training is to be mounted on a monocycle B of such a structure that the wheel is rotatably mounted at the bottom of the frame F to support a saddle S, wherein a grip 2 is installed in the foremost of an arm while a clamp 3 is installed at the base end, and in the condition that the frame F of the monocycle B is pinched by this clamp 3, the grip 2 should be position ahead and above the saddle S. Owing to the pinch of the frame F by the clamp 3, one can hold the grip 2 by two hands when this is mounted on the monocycle B, and even a beginner can make training without embracing a sense of incompatibility or unease to monocycle B, and it is also practicable to secure the directionality during the running.