Adult Still disease is an inflammatory disease of unknown cause, and also belongs to a kind of rheumatic immune disease, mainly has the following symptoms: 1, fever, fever is the most common and earliest symptom of adult Still disease, mainly manifested as high fever, the patient’s body temperature can reach 39 ℃ or more, may or may not be accompanied by chills; 2, adult Still patients will have muscle pain and arthralgia. Patients with arthralgia can often be found in the wrists, ankles, knees, etc.; 3, rash, rash in adult Still patients is very common, about 80% of adult Still patients will have a rash, usually on the face, trunk, extremities; 4, laboratory tests in adult Still patients can appear significantly elevated serum ferritin, more than 2000ug /L; elevated white blood cells, which can be above 15,000/mm^3. Adult Still disease is an exclusionary disease, and other rheumatic diseases, infections, tumors, tuberculosis, etc. need to be excluded before diagnosing this disease. The main drugs used to treat adult Still include glucocorticoids, DMARDs, biologics, etc. Of course, if you have this disease, you should go to the hospital, because it is also difficult to diagnose.