A multi-functional garden implement comprises an underframe, and a power motor is secured to the underframe. The multi-functional garden implement also comprises an adapting tube, inside which a transmitting shaft is rotatably connected. One end of the transmitting shaft connects to a working head. A locking sleeve is secured to the underframe, and the end of the adapting tube movably inserts into the locking sleeve. There is a locking piece designed on the locking sleeve, which allows the locking sleeve to clamp the adapting tube and secure the adapting tube onto the locking sleeve. The present multi-functional garden implement can replace the working head quickly, so that it has functions of cutting, micro tilling, etc.