In the diagnosis of malarial nephropathy, the urine examination can be seen to be saucy red or soy sauce colored, and in some patients who have been untreated for a long time, nephrotic syndrome may appear. So what is the differential diagnosis of urine saucy red or soy sauce colored? Here is a brief introduction. Pediatric blue urine: is the diagnosis of pediatric blue diaper syndrome malignant nephropathy, urine examination can be seen in the urine saucy red or soy sauce color, long-term untreated part of the patients, can appear nephrotic syndrome. Complications of the syndrome. General manifestations, there may be anorexia, vomiting, constipation, irritability, emaciation, visual loss and other symptoms. The child is pale, dwarf-like, has a flat nose, an inner canthus, nystagmus, squinting eyes, optic disc edema, and optic nerve atrophy. Green urine: Green urine is excreted when large amounts of anti-inflammatory drugs are taken or when Pseudomonas aeruginosa grows in the urine. Black urine: Black urine is relatively rare and often occurs in patients with acute intravascular hemolysis, such as patients with falciparum malaria, which is medically known as black urine fever and is one of the most serious complications of falciparum malaria. This is one of the most serious complications of falciparum malaria. In such patients, there is a large amount of free oxygen, hemoglobin and oxyhemoglobin in the plasma, which is excreted in the urine and causes the urine to be dark red or black. A few patients who take levodopa, methylphenidate and phenylhydrazine may also have black urine, which will disappear after stopping the drugs. Foreign data reported that patients suffering from paroxysmal myoglobinuria also excrete brown-black urine after exercise, accompanied by muscle weakness, which can gradually develop into paralysis. In addition, black urine can also be seen in phenol poisoning, melanoma, and urinary black acid disease. Brown urine (like the color of soy sauce): It can be seen in acute nephritis, acute jaundiced hepatitis, kidney crush injury, large burns, hemolytic anemia, wrong type of blood transfusion, and even after strenuous exercise, the urine can resemble the color of soy sauce. Sometimes the urine is brownish after waking up from sleep, and that is characteristic of paroxysmal sleep hemoglobinuria. If this urine appears after eating green fava beans, be alert to fava bean disease. This patient has a genetic predisposition for the lack of a substance called phosphoglucose dehydrogenase in the red blood cells. So when eating fava beans that occurs after brown urine, and fatigue, dizziness, nausea, skin, yellow eyes, should be promptly sent to the hospital to rescue, to prevent untoward.