The urine is more unpleasant then the possible causes: First, the occurrence of urinary retention or prolonged urinary retention, when the urine is stored in the bladder for too long, it can cause the decomposition of certain substances in the urine, such as protein decomposition after the production of ammonia, then in the process of urination or catheterization, the smell of urine is more unpleasant, mostly related to the long storage time, urine concentration, etc. Second, if urinary tract infection occurs, the presence of more bacterial metabolites and pus in the urine can also cause urine is also more unpleasant, generally accompanied by frequent urination, urinary urgency, painful urination and other discomfort, urinalysis examination, which can be seen within the white blood cells and bacteria number significantly higher. Third, long-term meat diet, urine in the trace protein is relatively high, in the process of urination smell relatively unpleasant, there is a certain smell of urine, you need to adjust the diet structure, meat and vegetables with the composition of solutes in the urine to improve, observe whether there is urine odor improvement.