The invention belongs to the technical field of beaver board production and relates to manufacturing of floor base materials, in particular to a manufacturing technique for a geothermal floor base material and the base material. According to the manufacturing technique for the geothermal floor base material, the production technological process comprises the steps of wood chip forming, screening, water washing, stewing, hot grinding, applying of a non-formaldehyde adhesive and a waterproof agent, drying, applying of additives, paving, prepressing, hot pressing, cooling and grading packaging. According to the manufacturing technique for the geothermal floor base material, by adjusting the adhesive applying technique, aluminum oxide and carbon fiber powder are added in fibers, and thus the manufactured floor base material is free of formaldehyde and good in water resistance. The heat conductivity and size stability of the geothermal floor base material are improved, the hidden danger that formaldehyde pollution is released in the using process of composite geothermal floors is eliminated, the problems of deformation, arching, open joint contraction and the like during usage of the composite floors are reduced, the heat conductivity and the heat insulation of the geothermal floors are improved, and the energy consumption is reduced.