A driving component for robot can include a communicating module configured to receive control signals, a motor, a controller coupled to the communicating module and configured to drive the motor according to the control signals received by the communicating module, a sensor configured to detect environment and providing detected results to the controller, a battery configured to provide electric power to the communicating module, the motor, the controller and the sensor, and a housing containing the communicating module, the motor, the controller, the sensor and the battery. The housing can include a coupling structure configured to couple to another driving component.