Heavy urine odor is not a precursor to any disease. Causes of heavy urine odor may be physiological causes such as morning urine, or it may be caused by urinary tract infections such as chronic cystitis and pyelonephritis. The odor of urine comes mainly from metabolic wastes such as urea. If too much protein is consumed every day, resulting in the body’s proteins being overly broken down, the urine odor is aggravated. Or intake of less water, urine is concentrated, resulting in the body of ammonia in the bacterial decomposition of urine odor aggravated, mostly seen in the morning urine. If there is a urinary tract infection, such as chronic cystitis, pyelonephritis, etc., the bacteria invade the bladder, the other urinary tract and cause inflammation, resulting in local mucous membranes are easily red, swollen, vesicles, frequent urination, urinary urgency, urination and other symptoms. The residual urine in the patient’s body reproduces a large number of microorganisms, stimulating the decomposition of urea and aggravating the smell of urine. When the symptoms of aggravated urine odor, please do not self-medication, it is recommended to go to the hospital, under the guidance of the doctor’s diagnosis and treatment.