The invention provides a multifunctional conveying machine, and relates to railway freight transportation load and unload in the field of engineering machinery. The multifunctional conveying machine is composed of a vehicle chassis, a hydraulic supporting leg, a load and unload mechanism, a hydraulic system and an electronic control system. The hydraulic system and the electronic control system are adopted for driving the vehicle chassis to walk, turn, brake and drive, the hydraulic supporting leg to transversely stretch and longitudinally adjust a height ,and the load and unload mechanism to unfold, fold, locate, and adjust a posture. The multifunctional conveying machine is used to load and unload cargo in bag among a train, an automobile, a freight house and a railway platform, and has the advantages of reasonably using a load and unload device, being capable of saving the labor force and reducing the labor intensity of a work, improving the efficiency of loading, unloading and carrying, reducing the load and unload operation cost, being beneficial for the cargo integrity and operation safety, and the like.