The invention concretely relates to a sandy utensil with heat insulation function, and a making method thereof. Floating beads, green gangue, bentonite and Datong sands are adopted as raw materials, natural green gangue which is 30 meters below the local coal seam and is moistened in the crustal bathyderm for billions of years is adopted as a main raw material, other auxiliary materials are added, the matching ratio of all the raw materials is determined, the sintering schedule is made, the yield is guaranteed, a sandy heater with good air permeability, good thermal stability and heat insulation function is produced through burdening, mud production, blank production, blank repairing, decoration, drying and sintering, and the method is characterized by burdening, blank production and sintering. The sandy utensil used as a breathable sandy heater has the advantages of good heat insulation effect, long life and high safety.