Abstract: Disclosed herein is a method for discriminating sacroiliitis by using sacroiliac joint MR images, implemented by one or more processors of a computing device, the method comprising the steps of: collecting MR images related to the sacroiliac joint and preprocessing the collected MR images to generate training data; training a bone marrow edema discrimination model by using the generated training data; and using the trained bone marrow edema discrimination model to determine the presence of sacroiliitis from MR images related to the patient's sacroiliac joint.