Semiconductor refrigerators have the advantages and disadvantages mentioned above. Its use, according to its characteristics, exists in various corners of daily life. It can be seen everywhere in daily necessities, aerospace industry, medical biology test, military and civilian livelihood industry, etc. The most common uses are microprocessor Cooler, dehumidifier, Laser Diode Cooler, Portable Picnic Cooler, Water Cooler, Therapy Water Pad, Mini Refrigerator, Blood An Analyser. Alyzer) and so on.