In the present invention, an assistance tool for assisting bodily movement is provided with a fitting part that attaches to the body, an actuator that includes a high polymer material which expands or contracts when voltage is applied, and an attachment part for attaching the actuator to the fitting part. The attachment part is attached so as to be detachable along with the actuator, and is provided with a positioning means that positions the actuator on the fitting part.本發明係一種輔助身體動作之輔助用具,且具備:安裝於身體之穿著部、包含施加電壓時伸長或收縮之高分子材料的致動器、及將致動器安裝於穿著部之安裝部,安裝部係以可與前述致動器一起拆卸之方式而安裝,並設有將穿著部中之致動器的位置實施定位之定位器。20‧‧‧電源部22‧‧‧右檢測部24‧‧‧左檢測部26‧‧‧穿著檢測部28‧‧‧控制部34、40‧‧‧電力配線54、56‧‧‧配線80‧‧‧襯衫82‧‧‧長褲84‧‧‧皮帶910‧‧‧輔助用具912、914‧‧‧人工肌肉部916、918‧‧‧致動器932、934‧‧‧安裝部960‧‧‧被安裝部965‧‧‧安裝鉤966‧‧‧繫止部986‧‧‧扣板
