In the An Mo Machine for having Prepare backrest portions, even if Shen Body are rested under backrest portion Qing Condition, rub that Hui does not meet user Shen Body yet by Treatment parts are applied, When, which makees to lean on, to be used and the good seat senses of Qi Zhong Time that take ones seat, Ye Neng Give user Tapes Come.This Hair bright An Mo Machine (1) have Prepare:Backrest portion (3), with Prepare the portions Bei of backrest portion (3) Inner Side An Mo Machine Agencies (7) and with Prepare backrest portion (3) Inner Side and the portions Will Bei An Mo Machine Agencies (7) draw the 1st Guide Rail (11) of Guide up and down, characteristic exists:(with Prepare at towards writing up and down direction, and the upper end Side of the 1st Guide Rail (11) is formed with the portions Bei is made to move back portion (9) to Hou Fang Shrink Tui Shrink An Mo Machine Agencies (7) 11) Department 1st Guide Rail.具備靠背部的按摩機中,即使在身體倚靠在靠背部的情況下,揉按施療件也不會碰到使用者的身體,只當作倚靠使用而就座其中時,也能給使用者帶來良好的座感。本發明的按摩機(1)具備:靠背部(3)、配備在靠背部(3)內側的背部按摩機構(7)、及配備在靠背部(3)之內側且將背部按摩機構(7)上下引導的第1導軌(11),其特徵在:第1導軌(11)係配備成朝著上下方向,而第1導軌(11)的上端側形成有使背部按摩機構(7)向後方縮退的縮退部(9)。7‧‧‧背部按摩機構9‧‧‧縮退部11‧‧‧第1導軌12‧‧‧第2導軌13‧‧‧揉按旋轉軸14‧‧‧揉按臂構件15‧‧‧揉按施療件16‧‧‧第1馬達16a‧‧‧第1馬達驅動軸17‧‧‧第2馬達17a‧‧‧第2馬達的上側驅動軸17b‧‧‧第2馬達的下側驅動軸18‧‧‧升降旋轉軸19‧‧‧捶敲旋轉軸20‧‧‧傾斜凸出部24‧‧‧連結軸構件26‧‧‧偏心凸出部27‧‧‧彈簧構件28‧‧‧升降齒輪29‧‧‧齒條齒30‧‧‧導引體31‧‧‧基座體