When the environment temperature changes in the range of 0~40℃, the gravity gradient measuring device should work at 30℃. This requires the use of bidirectional temperature control technology, and the semiconductor refrigeration technology should be applied to gravity meter platform. In this paper, the whole process of the structure design of bidirectional temperature control is introduced, and the method of determining the cooling power is given. In addition, the effects of heat insulation and heat preservation on the accuracy of temperature control, temperature control and the volume of the system are described. The key points of the design are analyzed. The principle and the method of the design of the wind turbine are summarized, and the rationality of the design is verified by the thermal simulation analysis. The design can meet not only the requirement of the system but also the requirement of the high precision of the gravity meter platform.