Hemoglobinuria is caused by the release of hemoglobin after the destruction of red blood cells, and patients tend to solve urine with a soy sauce or tea color. The first major type of common disease in hemoglobinuria is intravascular hemolysis, for the following reasons: first, the patient is born with a defective red blood cell, such as paroxysmal sleep hemoglobinuria or serum disease. The second, may be a blood type discrepancy during transfusion resulting in hemolysis. The third, may be malaria or severe infection leading to hemolytic disease. The second major category of common causes of hemoglobinuria is renal obstruction. The third major category of causes of hemoglobinuria often has the potential for hemolysis in the urinary tract, which can also occur with the appearance of hemoglobinuria. After the appearance of hemoglobinuria, it is important to visit a hospital in time to clarify the cause and treat it under the guidance of a doctor.