The present disclosure relates to a robot, a distance measuring method, and a recharging system for robot. The distance measuring method includes configuring a current position of a robot to be a first position, obtaining a first direction along a connection line from the first position to a signals transmitting position by a sensor of the robot, obtaining a second direction along a connection line from a second position to the signals transmitting position when the robot being driven by a driver to move along a moving direction by a predetermined distance to the second position, and the moving direction being perpendicular to the first direction to the second position, obtaining a distance between the second position and the signals transmitting position according to an included angle formed by the first direction and the second direction, and the predetermined distance.