Red tea-colored urine, the first thing to determine whether it is hematuria, or red tea-colored due to certain foods or drugs, must be laboratory urine routine can make a differential diagnosis. If there are no red blood cells in the urine routine, it may be caused by eating certain foods or drugs, the most common food may be dragon fruit, or eating rifampin, phenolphthalein, etc., which may lead to red tea-colored urine. If it is hematuria, there are many causes of hematuria. There are red cells in the urine routine, for example, the most common one is urinary tract tumor, or it may be urinary tract stone or urinary tract infection. Men or women with left renal vein compression syndrome can also cause hematuria. Trauma can also cause hematuria. Be sure to drink plenty of water and have ultrasound examinations of the kidney, ureter and bladder to find the cause.