Provided is a bicycle simulator including: a base portion; a frame support portion connected to the base portion to be movable in one direction and supporting a frame of a mounted bicycle connecting a front wheel and a rear wheel of the bicycle; a first sensor configured to sense a moving distance and a moving direction of the frame support portion in the one direction; a communication circuit configured to receive the moving distance and the moving direction of the frame support portion sensed by the first sensor; a processor configured to generate a bicycle avatar of which a traveling direction changes according to the moving distance and the moving direction of the frame support portion transmitted from the communication circuit; and a display configured to display a traveling state of the bicycle avatar.