Fishy smelling urine is generally seen as a result of inflammation of the urinary system. The inflammation of the urinary system leads to an increase in the amount of bacteria in the urine, which can cause the urine to have a foul, foul-smelling urine. Patients usually experience frequent, urgent and painful urination. This is when a routine urine test should be done. If there is an increase in the white blood cell count in the urine, suggesting a urinary tract infection, a urine bacterial culture test can be done and a sensitive antibiotic can be selected for treatment, or oral levofloxacin can be given for 3 days. At the same time, drink more water, urinate more often, keep the urine volume above 2000ml per day, diet must pay attention to avoid spicy and stimulating food, also pay attention to keep warm in winter, keep urination smooth, do not sit for a long time and hold urine.