The infrared band contains rich opportunities for astronomical research, but due to the limitations of infrared technology, the development of infrared astronomy in China has been far from satisfactory for a long time, especially for solar observation. “Accurate Infrared Magnetic field Measurements of the Sun” project (AIMS) is a National Major Scientific Research Instrument Development Project (recommended by the Ministries) supported by the National Natural Science Foundation of China. It is aimed at improving the accuracy of magnetic field measurement by an order of magnitude, by measuring the “Zeeman splitting” directly. In addition, as AIMS is also the first equipment specifically designed for mid- to far-infrared solar observation in the world, we also hope to utilize AIMS to explore potential new scientific research opportunities in the vast infrared region. This article will briefly introduce the scientific objectives, the telescope, the scientific post-focus instruments, and finally summarize the commissioning observations of AIMS.