The invention discloses a cleaning robot for a wind driven generator tower. The robot comprises a cabin, an omnidirectional wheel which is installed on the cabin, a magnet, a cleaning device, a hanging ring and a control mechanism, wherein the omnidirectional wheel is used for supporting the cabin to move on the surface of the tower, the magnet is installed on the cabin and is used for providing the adsorption force through which the robot can be attached to the surface of the tower tightly, the cleaning device is installed on the cabin and is used for cleaning the surface of the tower, the hanging ring is installed on the cabin and is used for being connected to a winch through a cable, and the control device is used for controlling the cabin to move vertically through the control of the winch and controlling the cabin to move along the circumferential direction of the surface of the tower through the control of a yaw system of a wind driven generator. By the aid of the robot, the surface of the tower can be cleaned completely, the robot can replace the manual power to conduct the high cleaning operation of the surface of the wind driven generator tower, and the time and the fee of the cleaning working can be saved.