High hematocrit can be normalized in a few days and cannot be generalized to its cause. Sedimentation rate is the rate of sedimentation of red blood cells under certain conditions. The speed of sedimentation is related to plasma viscosity, especially to the aggregation force between red blood cells. High hematocrit can occur in a variety of pathological and physiological conditions, such as in children under 12 years of age, in menstruating women, and from the third month of pregnancy to three weeks after delivery, and usually does not require treatment and returns to normal after the corresponding physiological stage. In the case of high blood sedimentation due to various infections, the patient may return to normal after anti-infection treatment, but the exact time is unpredictable. In addition, collagen diseases, tissue necrosis and injury, malignant tumors, blood disorders, chronic hepatitis, cirrhosis, hyperthyroidism, etc. can also lead to high hematocrit, which requires treatment for the original disease, but it is difficult to return to normal. Therefore, once patients have high blood sedimentation, they should go to the hospital for systematic examination to clarify the cause and early treatment. At the same time, pay attention to reasonable diet, regular life, appropriate exercise, no smoking and alcohol.