The utility model discloses nano laminated layer composite extrusion equipment which comprises n plastification supply devices, a junction station, a composite laminated layer generator and a tube blank mold head which are connected sequentially, wherein the junction station comprises n inlets and one flat outlet; the outlet of the junction station is provided with n areas in the thickness direction; a first melt channel which is respectively communicated with the inlets and a corresponding flat outlet area is arranged inside the junction station; each inlet of the junction station is connected with one plastification supply device; the composite laminated layer generator is formed by a plurality of connected composite molds; and the composite laminated layer generator is connected with the tube blank mold head through a first transition mold and a second transition mold. The equipment has the advantages that due to adoption of the first transition mold and the second transition mold, two identical layers ensure that the thicknesses of two semicircular melts are the same, and thus the quality of a tube blank is ensured.