PROBLEM TO BE SOLVED: To provide a piss aid for a dog toilet in which a water absorption material such as sheet materials is not damaged by mischief of a dog and the replacement of the water absorption material is also easy.SOLUTION: A piss aid 1 for a dog toilet concerning the present invention is set up at a tray of the dog toilet 7 and serves as a target when a male dog pisses. The piss aid is characterized by including a cylindrical case body 3 having multiple openings 11 of the size where a dog's foot cannot be inserted in a peripheral surface, a sheet material 5 stored in the inside of the case body 3 so as to come into view from outside through the opening 11 and absorbing urine, and fixing means 9 for fixing the case body 3 to a dog toilet floor detachably.SELECTED DRAWING: Figure 1【課題】犬の悪戯によってシート材等の吸水材が破損せず、また吸水材の交換も容易な犬トイレ用小便補助具を提供する。【解決手段】本発明に係る犬トイレ用小便補助具1は、犬用トイレ7のトレーに立設されて雄犬が小便をする際に的となる犬トイレ用小便補助具1であって、周面に犬の足が挿入できない大きさの複数の開口部11を有する筒状のケース本体3と、開口部11を介して外部から見えるようにケース本体3の内部に収容されて尿を吸収するシート材5と、ケース本体3を犬用トイレ床に着脱可能に固定する固定手段9とを備えたことを特徴とするものである。【選択図】 図1