Incomplete urination, also known as dysuria in clinical practice, is one of the common symptoms of urology, dysuria is mainly related to lower urinary tract obstruction or bladder dysfunction. Common causes of lower urinary tract obstruction mainly include prostatic hyperplasia in older men, prostatitis in young and middle-aged men, which is often accompanied by varying degrees of urinary frequency, dysuria, urinary weakness, and urinary waiting, in addition to incomplete urination. In addition, urinary tract infections, urinary stones, bladder stones, etc., in addition to the corresponding clinical symptoms, can also appear to varying degrees of incomplete urination. Bladder dysfunction, the most common cause of which is overactive bladder syndrome, a dysfunction of the bladder’s detrusor muscle, often abbreviated as OAB, often presents with incomplete urination in addition to frequent urination. Therefore, when incomplete urination occurs, you should go to the urology department as soon as possible for routine urinalysis, ultrasound of the urinary tract, measurement of residual urine volume, and urodynamic examination to clarify the cause if necessary.