The pungent fertilizer smell of urine usually refers to the smell of ammonia in the urine. The pungent fertilizer smell of urine can be a normal physiological phenomenon (such as drinking too little water, holding urine, eating high-protein food, etc.) can also be a pathological manifestation (such as urinary tract infections, etc.). 1. If for physiological reasons often seen: (1) urine concentration: normal urine can have a light ammonia odor, when the body is relatively dehydrated (such as drinking too little water, sweating more) urine concentration, can have a more pungent ammonia odor. After drinking a sufficient amount of water, usually the ammonia odor in the urine can be relieved. (2) hold urine for too long: when holding urine for a long time, urine in the bladder can continue to produce ammonia, urination can have a strong ammonia odor. (3) High protein diet: protein is the only source of nitrogen in the body, and nitrogen can be converted to ammonia in the body, so the phenomenon of pungent ammonia odor of urine can occur when the high protein diet, which can be alleviated by reducing the consumption of nitrogen-containing foods. 2. If for pathological reasons often seen in: (1) urinary tract infection: when infection occurs, the microorganisms in the urine can decompose the urinary substances and produce a large amount of ammonia, usually accompanied by frequent urination, urinary urgency, urinary pain symptoms, if you find such a situation, it is recommended to go to the hospital. (2) urinary retention: when the patient has urinary retention can also make the urine ammonia odor, similar to the principle of long-term urine holding. The cause of the urinary retention is usually treated, and a catheter may be used to drain the urine. Ammonia odor in the urine may also be caused by other factors, after eliminating physiological factors, we recommend that patients go to the regular hospital in time for treatment, and strive for a speedy recovery.