Closestool blow-off pipe

The invention relates to the technical field of sanitary ware accessories, and particularly discloses a toilet bowl blow-off pipe which comprises a blow-off pipe body, the blow-off pipe body comprises a water inlet connector, a bent pipe and a drainage connector, the bent pipe spirally extends from the outer edge to the center, the end, located on the outer edge, of the bent pipe is communicated with the water inlet connector, and the end, located on the outer edge, of the bent pipe is communicated with the drainage connector. The end, located in the center, of the bent pipe is communicated with the drainage connector. The bent pipe comprises a first U-shaped section and a second U-shaped section which are oppositely arranged, the first U-shaped section comprises a first arc-shaped pipe, a first straight pipe and a second straight pipe, the first straight pipe and the second straight pipe are arranged at the two ends of the first arc-shaped pipe respectively, and the first straight pipe and the second straigh