Thermoelectric semiconductors have enabled the application of semiconductor refrigerators in communication fields such as 5G networks, communication base stations and laser transmitters. They are used to improve the reliability of communication networks, ensure the stable and efficient operation of communication equipment, and provide important support for the innovation and development of communication technologies. Due to the high precision of communication equipment and its limited operating space, semiconductor thermoelectric refrigeration devices, featuring small size and vibration-free operation, are suitable for heat dissipation of communication equipment.