Stacking machine

The stacking machine comprises a cargo carrying table assembly, a lifting assembly and two stand column assemblies arranged on the two sides of the cargo carrying table assembly correspondingly, and the lifting assembly is arranged to enable the cargo carrying table assembly to ascend and descend along elevator rails of the stand column assemblies; the stand column assembly comprises a stand column upper section and a stand column lower end which are connected through a flange, and one of the stand column upper section and the stand column lower end is provided with a cylindrical part capable of extending into a flange inner hole of the other one. The cargo carrying table assembly comprises a main body, the main body comprises oppositely-arranged vertical frames and a box body frame connected with the vertical frames, and each vertical frame comprises oppositely-vertically-arranged first rectangular pipes, a first connecting plate set connected with the tops of the two first rectangular pipes in a tailor-weld