Possible causes of urine odor: 1, the presence of purulent infections of the urinary tract, such as kidney abscess or pyelonephritis, cystitis, etc. may appear in the urine purulent secretions, or increased bacterial metabolites can be manifested as smelly urine, accompanied by cloudy urine or accompanied by frequent urination, urinary urgency, painful urination, lumbago, fever and other symptoms, it is recommended that routine urine and urine culture examination to rule out the presence of infection. 2, diet consumption of special smelling food or fruit, such as durian or a large number of onions, garlic and other substances, may lead to a transient urine easy to smell, appropriate to drink more water and stop related food intake, the symptoms can gradually disappear. 3, if the pelvic surgery after the foul-smelling urine, there may also be bladder fistula such as rectal fistula of the bladder, the bladder may exist intestinal leakage of The feces and other urine malodor, accompanied by cloudy urine or excretion of fecal residue, mostly seen in the intestines or after pelvic floor surgery.