The invention discloses a modularized ground radiation heating base layer which comprises a concrete layer (1), an aluminum foil layer (2), a modularized template (3) and a surface layer (4), wherein the aluminum foil layer (2) is paved on the concrete layer (1); the modularized template (3) is fixed on the aluminum foil layer (2) through a binding agent; the surface layer (4) is paved on the modularized template (3); and pipe embedding slots and fixing nodes are formed in the surface of the modularized template (3), and are used for laying various pipelines. The modularized ground radiation heating base layer is convenient to construct, and achieves good heat preservation and heat insulation effects.