Abstract: Axial spondyloarthritis is a common disease that threatens human health and quality of life. In the past, the treatment of axial spondyloarthritis was delayed due to the difficulty of early diagnosis, resulting in irreversible damage to the spine and joints. However, with the development and application of MRI and its new technologies in recent years, especially relaxation time map imaging, not only can early spondyloarthritis be accurately detected but its quantitative analysis can also be achieved. This article introduces the value of relaxation time map imaging in the diagnosis of early spondyloarthritis.