Closed bladder irrigator and using method thereof

The invention discloses a closed bladder irrigator and a using method thereof. The closed bladder irrigator comprises a bottle stopper puncture outfit, a urinary catheter connector and a waste liquid bag connector. The bottle stopper puncture outfit is connected with a first tee joint through pipelines. The urinary catheter connector is connected with the waste liquid bag connector through a second tee joint. The second tee joint is connected with a third tee joint through pipelines. Two connectors of the first tee joint are connected with two connectors of the third tee joint through pipelines. One-way valves are installed on the pipelines between the first tee joint and the third tee joint. A liquid charging connector is installed on one of the pipelines between the one-way valves and the third tee joint. By means of the closed bladder irrigator and the using method thereof, clinical usability is greatly improved. Most importantly, the whole irrigation process is closed, so that cross infection between an o