Heat preserving layer structure of wall body

The utility model relates to a heat preserving layer structure of a wall body. The heat preserving layer structure comprises four layers which are arranged from inside to outside, wherein the first layer is an internal heat preserving plate; one surface of the internal heat preserving layer is a smooth plane, and while the other surface of the internal heat preserving plate is close to the second layer; the second layer is a rectangular structural heat preserving layer of which the middle is equipped with a rectangular hollow hole; the third layer is an external heat preserving plate; one surface of the external heat preserving plate, close to the fourth layer is a smooth surface; the fourth layer is a decorative surface layer which is adhered to the third layer; joggling grooves of the same structure are arranged in one surface of the first layer, close to the second layer, two surfaces and two ends of the second layer, and one surface of the third layer, close to the second layer; joggling parts are positio