A device for measuring soil body lateral stress includes a cylinder body, a cooling system, a temperature measuring system and a force measuring system. A semi-open tube body is integrated by a hexagon bolt as a whole; a steel wall is internally provided with an insulation sandwich layer and a seal cavity; the cooling system cools down the tube body by a circulating coolant, so as to freeze the soil body; the temperature measuring system is composed of a K type needle-shape thermocouple which is buried in the soil body and an external data acquisition instrument, and is used to measure the actual temperature of the soil body in a real-time manner; the force measuring system includes a threaded dowel bar, a pressure box, a bolt, a bearing steel wall, and the data acquisition instrument; the dowel bar is inserted into a preformed hole of a steel tube; a support nut is used to adjust an insertion depth; the bearing steel wall is provided with a threaded screw hole, and the bolt is installed therein; the bolt is turned to adjust the distance between a screw rod and a tail-end steel sheet of the dowel bar; the pressure box is fixed between the screw rod and the tail-end steel sheet of the dowel bar; the pressure box and the data acquisition instrument are connected so as to read the pressure value; and the parts, according to the above requirements, are assembled before the experiment starts.