Abstract: This article presents, the research about the vibration of the space environment simulation and research infrastructure (SESRI) scanning magnet for Harbin Institute of Technology (HIT), which uses laser displacement sensors to measure the amplitudes at the key test points. The purpose of the test is to analyze the factors that influence the vibration and the way to block or absorb vibration. The collected data show that when I＝450 A, f＜140 Hz, the magnet has no obvious vibration. Current and its frequency, especially frequency, are the main factors affecting the vibration. The scanning magnet for SESRI is resin casted with coil and iron core designed to be integrated. Compared with the previous design, the vibration is obviously reduced. As the conclusion, the rational design inside the magnet can block vibration, which can provide a reference for designing new magnets.