Pink urine, may be related to physiological factors or pathological factors, pathological factors are generally caused by diseases that cause hematuria such as urinary tract infections, stones or tumors. 1. Physiological factors: generally in eating food containing red pigment or taking certain drugs such as rifampicin, etc., in the body after metabolism, can be discharged pink urine, at this time the urine routine is normal, and there is no urinary tract irritation symptoms. 2. Urinary tract infections: in the presence of susceptible factors such as low immunity, pregnancy, medical infections or structural abnormalities of the urinary system, urinary tract infections are prone to occur, such as caused by cystitis, both frequent urination, urgency, urinary pain and other symptoms of urinary tract irritation, but also accompanied by hematuria. 3. urinary stones: urinary stones can be caused by urinary tract obstruction, metabolic abnormalities, the use of drugs such as amphotericin, etc. When upper urinary tract stones occur, there is pain, hematuria, nausea and vomiting, and symptoms of bladder irritation that is, urinary frequency, urgency, dysuria, at this time, the pink urine is the result of hematuria. 4. Urological tumors: such as bladder cancer, which can be caused by smoking, exposure to industrial chemicals, chronic bladder infection, etc. Hematuria is the most common symptom, and most of them have intermittent painless hematuria. Urine is pink in color, in addition to exclude physiological factors, it is recommended that patients go to the hospital in time to find out the cause of the disease, and follow the doctor’s instructions to standardize the treatment.