The present invention relates to an anal flushing device for toilet seat which can be installed on the toilet seat to wash the anus after toilet. In addition, it has a backflow prevention and filtration function so that it can be used hygienically.;That is, by bending the tubular body 11, the lower end of both ends of the horizontal bent portion 12 is attached with a double-sided tape 13, the front end 14 is composed of an inclination angle and the rear end is connected by a hose 15 A washing water supply pipe (10) directly connected to the washing water supply valve (22) installed in the mold distributor (21), A check valve 24 and a filtration filter 25 are installed in the feed water inlet 23 of the mold distributor 21. The lower part of the mold engine 21 couples the expansion and supply water pipe 26 to the coupling screw pipe 27, and the upper portion of the mold pipe 21 fixes the coupling screw pipe 30 to the fixed pipe 28 having the locking jaw 29. The anal flushing device for the toilet seat, characterized in that consisting of a water supply control device 20 that can be coupled to the coupling pipe (32) of the coupling pipe (32).
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