High hemoglobin and hematocrit (red blood cell volume) may be caused by the increase in the total number of red blood cells in the patient’s body, hypoxic diseases, etc. Usually, according to the different causes of the disease, medication, general treatment, oxygen therapy, surgical treatment and so on will be carried out. 1. Increase in total red blood cells: The increase in the total number of red blood cells in the patient’s body causes the red blood cells to rise, and the hemoglobin and hematocrit are high. Can be seen in the true erythrocytosis, patients can be treated with drugs, such as hydroxyurea, aspirin and other drugs, but also pay attention to dietary regulation, eat less spicy and greasy stimulating food, appropriate more exercise. 2. Hypoxic diseases: patients with hypoxic diseases, such as chronic obstructive pulmonary disease, will lead to symptoms of high hemoglobin and hematocrit. Patients can be treated with oxygen to relieve the uncomfortable symptoms; patients can also be treated with surgery, such as lung reduction surgery and alveolar resection surgery, to effectively improve patients’ respiratory muscles and lung function. Patients with this symptom should go to the examination in time and receive treatment under the guidance of the physician, do not delay the condition.