Closed bladder irrigation device

The invention relates to the technical field of urinary surgery, in particular to a closed bladder irrigation device which comprises a fixing part and a rotating part. A plurality of first pipelines are arranged inside the fixing part, and the first pipelines are respectively connected with a drainage bag, a perfusion device and a three-lumen urinary catheter; and the rotating part is arranged onthe fixing part, a plurality of second pipelines matched with the first pipelines are arranged inside the rotating part, and by rotating the rotating part, the connection and communicating methods ofthe first pipelines and the second pipelines are changed so as to change the connection and communicating methods of the drainage bag, the perfusion device and the three-lumen urinary catheter. The defects in the prior art are overcome, the closed bladder irrigation device enables patients and nursing staff to be safer, the discomfort of the patients and the nursing staff is reduced as much as possible, and the risk of inf