According to the inquiry of official website of Nanjing University of Technology, the specialty of energy and power engineering belongs to the category of energy and power, and it is one of the national key development fields with broad development prospects. It is a wide-caliber specialty that is merged from the original majors of heat engine, thermal energy engineering, fluid machinery and fluid engineering, thermal energy engineering and power machinery, refrigeration and low temperature technology, energy engineering, engineering thermophysics, water conservancy and hydropower power engineering, refrigeration engineering and so on. The discipline of energy and power is a new discipline in recent years, including basic technical courses and specialized courses involving knowledge in multi-disciplinary fields. Taking thermal power engineering as an example, it involves the following disciplines: thermal energy discipline; Mechanics discipline; Mechanical manufacturing discipline; Automatic control and computer science; Hydroelectric power generation discipline; Chemistry discipline. In order to meet the needs of the development of energy disciplines in China at the beginning of the 20th century, the knowledge of related disciplines should be appropriately arranged in the professional courses. The research scope of this major in colleges and universities with mechanical departments in the United States is so wide (in addition to mechanical and heat flow science, it also includes information control, biomechanics, MEMS and so on). ), which is also closely related to the interdisciplinary characteristics of this major.