The main countries in the world that have conducted research and development on maglev trains are: China, Germany, Japan, the United Kingdom, Canada, the United States, and the former Soviet Union. Among them, the United States and the former Soviet Union abandoned their research programs in the 1970s and 1980s, respectively. In recent years, the United States has started new research again. The United Kingdom began to study maglev trains in 1973 and was one of the first countries to put maglev trains into commercial operation. For example, in April 1984, the 600-meter-long maglev transportation system between Birmingham Airport and the railway station was officially put into operation. Passengers take the maglev train from the airport to the railway station in only 90 s. But in 1995, after 11 years of operation, the United Kingdom was stopped. Therefore, the most mature research on maglev trains in the world is Germany, Japan and China. 1. Situation of maglev trains in China, Germany, Japan and the United States 1) China's maglev China has become the fourth country in the world to master medium and low speed maglev technology after Germany, Japan and South Korea. China Railway Construction invested 2 billion yuan to establish China Railway Maglev Transportation Investment and Construction Co., Ltd. in Wuhan, marking the official industrial operation of China's maglev. Today, the development of a high-speed maglev with a speed of 600 kilometers per hour will enable China to achieve a leading position in this technology field in the world. According to official public information, compared with foreign countries, the high-speed maglev train developed in China reduces the energy consumption by 35%, the temperature rise of the electromagnet by 40°C, and the weight of the vehicle per unit payload is reduced by more than 6%. 600 km/h also means that ground traffic will be able to reach 2/3 the speed of an airplane. Therefore, the high-speed maglev with a speed of 600 kilometers per hour will fill the speed gap between high-speed rail and air transportation, and form a multi-dimensional transportation structure that makes aviation, high-speed rail, high-speed maglev and urban traffic speed gradients more reasonable, efficient, flexible and convenient to meet the travel of different groups of people. need. On May 23, 2019, my country's 600 km/h high-speed maglev test prototype rolled off the assembly line in Qingdao. It marks that my country has achieved a major breakthrough in the field of high-speed maglev technology. High-speed maglev trains can fill the travel speed gap between aviation and high-speed rail passenger transportation, and have great technical and economic significance for improving my country's three-dimensional high-speed passenger transportation network. On October 21, 2019, CRRC announced that it will start the research and development of high-speed maglev trains with a speed of 600 kilometers per hour and high-speed trains with a speed of 400 kilometers per hour. As the first enterprise in China to organize national key special projects, CRRC organizes and implements high-speed maglev projects. Among them, CRRC Qingdao Sifang Locomotive and Rolling Stock Co., Ltd. will lead the organization to build a high-speed maglev test line with a length of no less than 5 kilometers. As early as 2016, according to the Reference News Network, Hong Kong media said that China is developing a super maglev train, which adopts a vacuum tube design and can reach a speed of 2,900 kilometers per hour in the future. The Hong Kong 'Business Daily' website reported that at the Institute of Superconducting Technology of the State Key Laboratory of Traction Power at Southwest Jiaotong University, Chinese scientists successfully completed the first manned high-temperature superconducting magnetic levitation loop orbit test. The project is led by Dr. Zigang Deng, who has been researching the technology for several years. Science and Technology World reported that a research team led by Deng Zigang conducted the first high-temperature superconducting magnetic levitation loop orbit test. This new type of circular track will set off a wave of faster trains. News from Science and Technology Daily: On May 24, 2021, the launching ceremony of the Shanxi Provincial Laboratory for High-speed Speeding, a key engineering project in Shanxi Province, and the foundation stone laying ceremony of the Datong (Yanggao) test line project were successfully held. The ultra-high-speed low-vacuum pipeline maglev transportation system (also known as high-speed flying car) project is a major decision-making deployment of the Shanxi Provincial Party Committee to seize the frontier of rail transportation technology.