Can urinate out is not necessarily not urinary retention, urinary retention patients can not urinate at all, but the bladder urine storage reaches a certain amount, at this time, the bladder has no space to store urine again, the phenomenon of natural urinary loss can occur, similar to the water tank full of water, if the water tank and then pouring water will be spilled from the edge of the tank, so it can be manifested as the patient can urinate, but the bladder is already completely full of urine, at this time is also referred to as Urinary retention. There are two criteria for judging urinary retention: 1) whether the patient can urinate on his/her own, that is to say, he/she can urinate by his/her own will, instead of being forced to urinate with fullness; 2) whether the bladder can be emptied, if the bladder is completely emptied after urinating on his/her own, then it is definitely not urinary retention; however, if a large amount of urine remains in the bladder after a little bit of urine has been discharged, then the bladder will still be called urinary retention; therefore, being able to urinate does not necessarily mean that the patient does not have urinary retention. So being able to urinate is not necessarily not urinary retention.