Among various cooling technologies, semiconductor refrigeration has been widely valued at home and abroad in recent years because of its small volume, lightweight, fast-acting speed, high reliability, long life, no noise, and no maintenance, etc. In addition, semiconductor refrigeration belongs to solid refrigeration, excellent seismic performance, accurate size, especially suitable for the replacement of the overweight state can not be used in the conventional refrigeration. At present, semiconductor refrigeration has been applied in the field of aeronautics and astronautics, and it is developing rapidly and has a tendency to replace mechanical refrigeration.