Bladder spasm is an involuntary jerking and contraction of the bladder muscles that generally does not change at the person’s will. Solifenacin, tolterodine, and tamsulosin can be taken to relieve the symptoms of bladder spasm. Bladder spasms can cause clinical symptoms such as bladder pain, lower abdominal pain, and hematuria in the naked eye, so bladder spasms need to be relieved. Bladder spasms are usually caused by catheter irritation, poor catheterization, and blocked urethra. Relief of bladder spasms begins with keeping the catheter open. If there are blood clots and prostate tissue inside the bladder, it is recommended that a 20ml syringe is needed to flush out the blood clots and prostate tissue to prevent prostate tissue and blood clots from blocking the catheter, which combined with medication can further relieve the clinical symptoms of bladder spasm.