High erythrocyte pressure is also known as high hematocrit, and food has only nutritional value for the body and does not play any role in hematocrit regulation. High hematocrit is usually caused by various reasons of blood concentration, such as massive diarrhea, vomiting, etc., but also can be seen in the blood system diseases, such as true erythrocytosis. Food can only provide the body with the energy and nutrients needed for daily functioning, which is helpful for the body to maintain normal physiological functions, but does not have any therapeutic effect on human diseases, so there is no therapeutic effect on high hematocrit. If there is a high hematocrit, it is recommended to go to the hospital as soon as possible for a clear diagnosis and standardized treatment under the guidance of the doctor.