In the case of adopting a massage mechanism which is capable of mechanically treating a treatment region ranging from buttocks to thighs, it is ensured to prevent a user from feeling a discomfort feeling at a time of seating on a seat. A massage machine includes a seat massage mechanism which is provided inside a seat and performs a massage of a treatment region ranging from buttocks to thighs (treatment region including at least buttocks) of a user seating on the seat, and in this massage machine, a guide is arranged along a front and rear direction inside the seat allowing the seat massage mechanism to be movable in the front and rear direction.採用可對臀部至大腿的施療部作機械式施療的按摩機構時，使用者不會在就座時產生不快感。本發明的按摩機(1)具備座位部按摩機構(5)，其係設在座位部(2)的內部，並且對就座於座位部(2)之使用者由臀部到大腿的施療部(至少包含臀部的施療部)進行按摩，其中，座位部(2)的內部配設有沿前後方向設置且可使座位部按摩機構(5)移動於前後方向的導引手段(8)。
