A walking stick (100) includes a main part (110) that is stick-like, a sensor (130) that detects at least one of an acceleration of the main part (110) and an angular velocity of the main part (110), a light emitter (150) that emits light on a ground, a balance evaluator (142) that evaluates a user's walking balance stability based on at least one of the detected acceleration and the detected angular velocity, and an emitting controller (144) that controls a light emitting direction of the light based on a result of the evaluation and an inclination angle of the main part (110).
