Urinary retention is a condition in which urine accumulates in the bladder and cannot be excreted normally or smoothly. According to the patient’s medical history and specific symptoms, it is divided into two categories: acute urinary retention and chronic urinary retention. Acute urinary retention has a rapid onset, sudden onset, urine filling up in the bladder in a short period of time, urine cannot be discharged, the patient is more painful, the main symptoms are abdominal cramping and pain, the urethra may unconsciously overflow a small amount of urine, the small abdomen is obviously bulging, the bulging bladder can be obviously touched, timely treatment is needed, catheterization or abdominal wall cystocentesis is performed to drain the urine first and relieve the patient’s pain, then Consider finding the cause of urinary retention and targeting treatment. Chronic urinary retention has a long history and mostly manifests as poor urination, frequent urination, etc., often with a sense of incomplete urination and sometimes incontinence, mostly with urine residue after urination, and the patient is unable to completely empty the bladder, in which case the patient’s pain level is not particularly high, but long-term urine residue may lead to dilatation of the upper urinary tract, hydronephrosis, ureteral effusion, and in serious cases, the patient may have abnormal kidney function, leading to Uremia, etc. Patients may show weakness, anemia, urine odor in the breath, lack of appetite, etc., and also need to seek medical treatment in time.