If a patient’s urine has a strong irritating odor, it is considered to be caused by the following reasons: First, it is considered to be caused by urine concentration. If the amount of water drunk is relatively low or the amount of sweating is relatively high, the loss of too much body fluid will lead to urine concentration, making the urine smell stronger and yellowish in color. Second, consider that the patient’s daily diet contains more protein substances, which can cause excessive protein decomposition to produce nitrogenous substances, and the bacteria in the urine will break down the nitrogen into ammonia substances, which can produce a strong and irritating smell. Thirdly, consider that the urine stays in the bladder for too long and the decomposition of ammonia in the urine plays more, which can also make the smell in the urine stronger. The above are the specific reasons why patients’ urine has an irritating odor, and it is recommended that patients can be adjusted according to their actual situation and drink more water in general, which can significantly improve the smell of urine.