The first thing to know is what is meant by hemoglobinuria, which is the phenomenon of urine containing free hemoglobin without red blood cells, or only a few red blood cells with a large amount of free hemoglobin, and it reacts to the presence of hemolysis in the blood vessels beyond normal. As the hemoglobin content in the urine varies, the urine can be red, strong tea-colored, or in severe cases, soy sauce-colored, and patients can respond to different symptoms depending on the cause. For example, in paroxysmal sleep hemoglobinuria, the patient’s hemoglobinuria, easily appears in the first urine early in the morning, while fava bean disease has a history of eating fava beans or occurs again during the flowering season of fava beans, hemolysis is often accompanied by hemolysis, anemia, yellow bile, hepatosplenomegaly, etc. According to the primary disease causing hemoglobinuria, treatment can be performed for the cause. For example, if the hemoglobinuria is caused by hemolytic anemia, hormone therapy can be given. For example, if hemoglobinuria is caused by hemolytic anemia, hormone therapy can be given.