This creation provides a kind of pet toilet training device, includes a pedestal, a mark column and a smell hydrating structure. The pedestal has a bottom surface and a top surface, which forms an accommodation groove； The mark column sets the what pedestal； The smell hydrating structure sets the what mark column. Thereby, smell hydrating structure attracts pet close, to allow pet to be capable of fixing in accommodation groove and carry out urine in the way of inducing pet, the effect of reaching easily training pet urine.本創作提供一種寵物大小便訓練器，包含一底座、一標示柱及一氣味吸水結構。該底座具有一底面及一頂面，該頂面形成一容置槽；該標示柱設於該底座；該氣味吸水結構設於該標示柱。藉此，氣味吸水結構來吸引寵物靠近，以利用誘導寵物的方式，讓寵物能固定在容置槽內進行小便，達到輕鬆訓練寵物小便之功效。
