Fabricated building thermal insulation wallboard and mounting structure thereof

The invention discloses a fabricated building thermal insulation wallboard and a mounting structure thereof, and relates to the technical field of thermal insulation wallboards, the fabricated building thermal insulation wallboard comprises a right-angle fixing plate, a strip-shaped fixing plate and a thermal insulation part, the right-angle fixing plate and the strip-shaped fixing plate are in butt joint end to end to be spliced into a frame, and the right-angle fixing plate and the strip-shaped fixing plate are fixed to the inner wall of a wall through mounting bolts. By arranging electric heating pieces, a circuit board can be controlled through an external controller, so that the circuit board supplies power to the four electric heating pieces, the temperature of a heat conduction plate is increased, the temperature is transmitted to the surface of a stone plate shell, and the purpose of increasing the temperature of the indoor space according to the indoor condition is achieved; the positions of the magn