The cooling system of high-temperature superconductivity (HTS) applications has become the most important issue in this field nowadays. Some HTS applications are mostly developed as systems that have an established place in our society. However, cooling systems are not developed for the HTS applications and are still in the experimental stage. Cooling systems should be developed as systems which can be used in the commercial world. In this paper, cooling systems, refrigerators and pumps were described and the available and the required cooling systems were shown.