High red blood cell pressures may be caused by strenuous exercise, severe diarrhea, chronic pulmonary heart disease, and myeloproliferative disorders. Patients can be improved by rest, rehydration, oral medication or intravenous bloodletting. 1. Strenuous exercise: generally due to strenuous exercise or emotional excitement, etc., can also appear to a certain degree of high erythrocyte pressure volume. This kind of physiological factors caused by high values, should pay more attention to rest, calm the inner emotions, etc. can be restored to normal. 2. Severe diarrhea: Due to severe diarrhea, the patient’s body is in a state of severe dehydration, which increases the concentration of blood and leads to high erythrocyte hematocrit. The patient can increase the water in the body by replenishing fluids and drinking more water at the same time, and the erythrocyte pressure volume will return to normal. 3. Chronic Pulmonary Heart Disease: Chronic hypoxia due to respiratory distress prompts the bone marrow to produce more red blood cells, resulting in a high erythrocyte pressure volume. Patients can take expectorant and phlegm-clearing drugs, such as aminoglutethimide and aminoglutethimide, to improve the situation. 4. Myeloproliferative diseases: such as true erythrocytosis, primary thrombocythemia and so on, can also lead to high erythrocyte pressure volume. Intravenous bloodletting and myelosuppressive agents (hydroxyurea) can be used to lower the red blood cell count. Patients presenting with a high erythrocyte pressure volume should seek prompt medical attention.