The invention provides a thermal insulation box with good thermal insulation effects, and relates to the field of power detection equipment. The thermal insulation box with good thermal insulation effects comprises a box body, an inner shell, an insulating thermal insulation layer, an inner nest, a storage box, a heating device, a circulation device, a box door and a hinge, wherein an inner shellis fixedly fixed in the box body; the inner shell is internally fixed with the insulating thermal insulation layer; the insulating thermal insulation layer is internally provided with the inner nest;the inner nest is internally provided with the storage box; the heating device is arranged between the inner nest and the storage box; the top of the heating device is provided with the circulation device; and the front surface of the box body is provided with the box door. According to the thermal insulation box with good thermal insulation effects, through the heating device, an electric telescopic rod pushes a movable plate on the upper surface of a slider to slide in a sliding groove, the heating sheet on the surface of the movable plate heats the surface of the storage box, the effect ofuniform heating is achieved, a phenomenon of quick cooling in the case of inner heating does not happen due to the insulating thermal insulation layer, the cooling time is slowed down, and the thermalinsulation effects are achieved.