The utility model relates to a mattress of a folding massage couch with the heating function, which comprises a left mattress and a right mattress, wherein the left and the right mattresses are movably connected through a hinge; handles are arranged at the middle top ends of the left and the right mattresses; the left and the right mattresses both comprise a wood frame, a thick sponge, a single-side reflective thermal-insulating sheet, an electric blanket and a thin sponge; two small round holes are symmetrically formed on thin boards of the left and the right mattresses close to the hinge; a mother terminal of the connecting wire of the electric blanket on the left mattress and a daughter terminal of the connecting wire of the electric blanket on the right mattress are led out through the two small holes and connected with each other; and a power socket is arranged at the left upper corner of the left mattress, fixedly connected on the thin board of the left mattress through screws, and connected with the handle connecting wire of a control handle. The utility model has the benefits of small area coverage and portability, and can realize massage under a low temperature.