Bladder pacemakers are mainly used for symptomatic improvement of patients with urinary difficulty, urinary retention, urinary frequency, urinary urgency, and urge incontinence, and their hazards mainly include infection, mild electric shock sensation, and gastrointestinal dysfunction. 1. Infection: the implantation of bladder pacemaker requires skin incision, and the pacemaker is a foreign body to the organism, so the pacemaker implantation surgery has the risk of infection, in addition to local skin infection, there is also the possibility of pelvic infection. 2. Slight electric shock: bladder pacemakers are similar to heart pacemakers in that they stimulate the sacral nerves by sending electrical impulses to regulate the bladder, sphincter and pelvic floor nerves, so when the pacemaker is working, the human body will feel a slight electric shock, which will cause discomfort. 3. Gastrointestinal dysfunction: the stimulation of the sacral nerve by the pacemaker also spreads in the abdominal cavity, which in turn affects the electrical activity of the intestines, leading to gastrointestinal peristalsis and digestive and absorption dysfunction. The appearance of urinary disorders, it is recommended to follow the doctor’s instructions for standardized treatment.