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Rotary jet pump development history, working principle, structure, characteristics, applications made a more comprehensive introduction. Rotary jet pump structure principle is 1923 by F. W. Krogh suggested that he promoted the Pitot tube principle to the design of the pump so it was called a Pitot pump. The first pump developed using pitot tube principle is open and has many drawbacks. Until the 1920s; people have developed a closed Pitot pump. After the outbreak of World War II, Germany and Britain began to develop rotary jet pumps for the development of rockets and missiles. With the end of World War II, rotary jet pump research fell into a downturn. Until the 1960s, people invented the enclosed runner and the cover, which formed a radial rotating impeller to make the rotary jet pump began to develop and eventually formed the current Pitot-tube principle of jet pump model. At this point, a multitude of industries need a stable, high-pressure pump that can adjust flow rates and work on a full range of lift curves. Such high-pressure pumps are required for cleaning systems in the food industry, and rotary jet pumps happen to meet this requirement. Such cleaning systems are found everywhere in the food industry, such as meat packaging, brewing, canning of fruits and vegetables, and beverage processing. In addition, pumps with such operating characteristics are needed in the paper industry, petrochemical and refinery, and power plants. In this context, the patented rotary jet pump appeared in the United States in the 1960s. By the 1970s, Kobe Corporation produced the first commercial rotary jet pump, and since then rotary jet pumps have started to go to the market and are gradually accepted. In the 1970s and 1980s, there was a worldwide patent climax on rotary jet pumps. Abroad, rotary jet pump has been more satisfactory performance