The probability of urinary system injury caused by laparoscopic surgery is about 0.1%-0.2%. Including bladder and ureteral injuries. Bladder injury is easy to cause injury when the bladder is full during the operation, and the normal anatomical position of the bladder is changed due to the history of pelvic and abdominal surgery such as cesarean section. Air needles and Trocar can cause injury. veterinary B-ultrasound should be used after the operation to observe the injury. People with short stature or children have a higher chance of injury. Bladder injuries include serosal tears, intraperitoneal perforation and extraperitoneal perforation. Bladder serosal injuries can be treated non-surgically, including placing a catheter and keeping it open for a long time, drinking more water and using antibiotics to prevent infection. The catheter can be removed 1-2 days after the urine becomes clear, and the recovery can be checked using veterinary B-ultrasound.

Intraperitoneal bladder perforation: If oliguria, hematuria or hematoma of the bladder wall is found during the operation, bladder injury should be highly suspected, and it can be judged by veterinary B-ultrasound examination. If a fissure is seen under laparoscopy, urine is found in the pelvic cavity or the urine bag is inflated, it can also be diagnosed. When bladder injury is suspected during surgery, cystoscopy or intravesical injection of methylene blue can be performed to assist in diagnosis. If a fissure is seen under cystoscopy or methylene blue overflows into the pelvic cavity, it is a bladder injury. Sometimes bladder injury cannot be found during surgery, especially thermal burns are not easy to find during surgery. Symptoms such as oliguria, hematuria, suprapubic pain and even fever may appear 24 hours after surgery. No urine during catheterization. Small intraperitoneal bladder injuries can be treated non-surgically, such as keeping the catheter open for a long time and using antibiotics prophylactically; large perforations should be repaired by laparotomy or laparoscopy. After surgery, the catheter or suprapubic drainage should be retained for 10-14 days, and antibiotics should be given. Cystography should be performed before removing the catheter to confirm that the perforation has healed. Veterinary B-ultrasound can be used regularly for observation.