The Mars Orbiter payload Mars magnetometer, independently developed by the University of Science and Technology of China, successfullygot on board the “Tianwen-1”, China's first Mars probe. The main functions of the Mars magnetometer are to obtain high precision data of the magnetic field environment around the Mars, to measure the boundary layer with space, and to explore the remaining magnetization of local rock on the southern side of Mars and its magnetic induction layer. It is also designed to further investigate interplanetary plasma and interplanetary magnetic fields close to Mars. At the same time, in combination with other load instruments, it will carry out studies on particle escape from the Martian atmosphere. On May 15, “TianWen-1” successfully landed on Mars, marking an important step in China's journey of interstellar exploration. At 9:49 on May 25, the extension rod of The Mars magnetometer was deployed in orbit. At the same time, the telemetry parameters showed that it had been deployed in place, and the scientific data it returned proved that the product was operating normally. The Mars magnetometer then began the scientific exploration of vector magnetic fields in Martian space.