The invention relates to a container loading machine which is characterized in that a shear supporting device comprises an outer shear frame, an inner shear frame, a hinge shaft, a fixing plate, a lifting cylinder and an inclined swing arm device. The inner shear frame and the outer shear frame are arranged on the two sides of the upper end of an automotive chassis respectively, the inner shear frame and the outer shear frame are hinged in a crossed mode through the hinge shaft, the lower end of the inner shear frame is hinged to a connecting rod, the two ends of the connecting rod are respectively in sliding connection with the automotive chassis, the lower end of the lifting cylinder is hinged to the automotive chassis, the upper end of the lifting cylinder is hinged to the upper portion of the inner shear frame through a telescopic rod, the lower end of the outer shear frame is hinged to the front portion of the automotive chassis, the upper end of the outer shear frame is hinged to the rear portion of a conveying platform through the inclined swing arm device, and the inclined swing arm device comprises a folding arm cylinder and an inclined swing arm. The upper end of the inclined swing arm is in sliding connection with the conveying platform, the lower end of the inclined swing arm is hinged to the outer shear frame, the lower end of the folding arm cylinder is hinged to the outer shear frame, the upper end of the folding arm cylinder is hinged to the inclined swing arm. The container loading machine has the advantages of being novel in structure, high in general performance, rapid in butt joint, high in transport efficiency and the like.