Yellow urine may be caused by physiological factors such as taking medicines or eating yellow food, or it may be caused by hemolytic jaundice, cholestatic jaundice, and other reasons such as cystitis. 1. Physiological factors: if you usually take yellow drugs such as vitamin B and safranin, or eat yellow foods such as oranges and mangoes, the yellow pigments in the drugs or foods will be excreted through the urine, which may lead to yellowing of urine. 2. Hemolytic jaundice: hemolytic jaundice is considered to be caused by sickle cell anemia, autoimmune hemolytic anemia and other factors. The patient will appear skin function yellow stain, some patients will also have tea-colored urine or soy sauce-colored urine performance, so the patient will appear yellow urine. 3. Cholestatic jaundice: Cholestatic jaundice may be caused by parasitic infection, stones, liver tumor and other diseases. The patient will show tea-colored urine, dark yellow skin and yellowish eye sclera, so the patient will have the symptom of yellowish urine. 4. Other: patients with acute glomerulonephritis, renal failure, dehydration can also lead to yellow urine. If the yellowing of urine is caused by physiological factors, there is no need for treatment, if the yellowing of urine is caused by disease, you need to seek medical attention.