Spondyloarthritis is mainly diagnosed through a combination of factors such as the patient’s symptoms, family medical history, past medical history and physical examination. When patients experience clinical symptoms such as low back pain and activity limitation, which are relieved after activities and are heavier after rest or sedentary activities, there may be pain in the neck, shoulders and lower back, and some patients may also experience digestive symptoms such as diarrhea and abdominal pain. If localized X-ray or CT examination shows sacroiliac arthritis suggestive of spondyloarthritis. If the patient has low back pain for more than three months with morning stiffness and has a family history of the disease, he or she can be examined by imaging and laboratory tests. Imaging that shows typical sacroiliac joint involvement and laboratory tests that show increased blood sedimentation and C-reactive protein can generally confirm the diagnosis of spondyloarthritis. The diagnosis of spondyloarthritis is complicated, and it is recommended that patients consult a doctor in time for a clear diagnosis and treatment.