To provide a bathtub lifting/lowering device that secures a heat retaining property of a body of a user by using liquid in a lifting/lowering member installed in a bathtub.SOLUTION: A bathtub lifting/lowering device 1 is provided with a lifting/lowering member 2 installed in a bathtub Ba and to be lifted/lowered by internal liquid, a liquid supply part 3 for supplying the liquid to the lifting/lowering member 2, and a discharge passage 4 for discharging the internal liquid from the lifting/lowering member 2. The discharge passage 4 is provided with a shower head 8.SELECTED DRAWING: Figure 3【課題】浴槽内に設置された昇降部材の液体を用いて、利用者の身体の保温性を確保した浴槽内昇降装置を提供すること。【解決手段】浴槽内昇降装置１は、浴槽Ｂａ内に設置され、内部の液体により昇降する昇降部材２と、液体を昇降部材２に供給する液体供給部３と、昇降部材２から内部の液体を排出する排出路４と、が設けられ、排出路４にはシャワーヘッド８が設けられている。【選択図】図３
