The general causes of heavy urine odor are: dietary problems, concentrated urine, urinary retention, and symptoms of bacterial infections or sexually transmitted diseases. 1. Heavy urine odor may have something to do with diet. According to physiological studies show that some small molecules in food can be excreted directly through the urine without metabolism, and it is normal for urine to have a heavy odor when too much food is consumed. 2. urine odor is too heavy may be urine concentration. If you don’t have any obvious discomfort, and you don’t eat some special food, it may be caused by the concentration of urine, which is directly related to the small amount of drinking water or too much water loss. This is directly related to low water intake or excessive water loss. At this time, it is recommended to increase the amount of water intake, generally will gradually improve. 3. The urine odor is too heavy may suffer from urinary retention, bacterial infection symptoms. Normal urine volatile acid, after placing due to bacterial decomposition of urea or ammonia odor. Urinary retention due to the prolonged accumulation of urine in the bladder leads to increased bacterial reproduction, metabolism produces an increase in odor. Bacteria multiply more easily in urinary tract infections, which also tend to produce an odor. If the newly excreted urine has a heavy odor or is accompanied by cloudy urine, it may be a sign of urinary retention or bacterial infection. You need to go to the hospital as soon as possible.