Hematocrit of 26mm/h is elevated, the reasons are divided into physiological and pathological reasons, need to be combined with clinical symptoms and other tests to determine the cause of elevation, and according to the specific conditions under the guidance of the doctor to choose the treatment. Blood sedimentation refers to the rate of erythrocyte sedimentation, under normal circumstances, the value of men in the 0-15mm / h, women in the 0-20mm / h. Causes of rapid blood sedimentation are divided into physiological and pathological reasons. Physiological causes of increased blood sedimentation levels are often seen in children under 12 years of age, the elderly, and women during menstruation and pregnancy, while pathological causes of increased blood sedimentation levels are more common and can be seen in inflammatory diseases, tumors, rheumatoid immune disorders, and bacterial infections, among others. When the blood sedimentation level is found to be elevated, it is necessary to combine the patient’s clinical symptoms and other tests (such as C-reactive protein, blood routine, autoantibodies, imaging tests, etc.) to find out the root cause of the elevated blood sedimentation level. If rheumatoid arthritis is suspected, a comprehensive diagnosis should be made by testing rheumatoid factor, antinuclear antibody, anti-cyclic citrullinated peptide antibody, ultrasound and X-ray. If the test finds that the blood sedimentation level is increased, it is recommended that the patient consults a regular hospital, completes the relevant examinations to clarify the diagnosis, and chooses the treatment according to the condition, so as to avoid delaying the condition.