The color of urine is red. What's going on?

If the color of urine is red, it mainly includes the following two situations: first, physiological, it is due to taking certain drugs or foods, causing urine to appear red, common red pitaya, rifampicin, etc. These drugs or foods contain certain red pigments, which cannot be absorbed by the human body and need to be excreted through the digestive system or urinary system. Second, pathological, that is, hematuria, mainly due to urinary infection, tuberculosis, stones, tumors, etc., resulting in capillary rupture of the urinary system, causing red blood cells to enter the urine, through urine routine, urinary color ultrasound, etc. can hematuria and hematuria etiology diagnosis and differential diagnosis.