The possible reasons why urine is too smelly are as follows: 1, suffering from urinary tract infection, after the infection, urine mixed with pus or bacterial metabolites, shedding epithelium, etc., will lead to more smelly urine, accompanied by urinary frequency, urinary urgency, painful urination and other symptoms of urinary tract irritation, and the appearance of the discharged urine is cloudy and darker in color. It is necessary to carry out routine urine examination and urine culture examination to exclude infection.2. Patients with diabetes have smelly urine because the high sugar content in the urine or the presence of ketone bodies, etc., may lead to smelly urine and require urine sugar and blood sugar testing.3. If the diet consumes a large amount of onion, garlic, durian, etc., it can cause transient smelly urine, and the smelly urine can disappear by stopping the related food intake.4. 4, long time high protein diet or meat diet patients, the decomposition of proteins in the urine, can produce ammonia substances, the discharge of urine odor is more smelly.