The utility model relates to a massager, which is suitable for pressing muscles on both sides of the spine of the human body, and comprises two massage parts spaced along a central axis, and a ring groove interposed between the massage parts and corresponding to the spine of the human body. Each massage part has several ridge surfaces arranged around the central axis, and several ridge surfaces arranged around the central axis and located at two adjacent ridges. The ridge surfaces extend along the central axis.The utility model uses the ridge surface to press against the human body for massage, and the fingers of the user can be stably held at the groove, which can improve the massage comfort and increase the massage area under the condition of novel and simple structure.一種按摩器,適用於按壓人體脊椎兩側的肌肉,並包含兩個沿著一條中心軸線間隔的按摩部,以及一個介於該等按摩部之間並對應人體之脊椎的環溝,每個按摩部都具有數個圍繞該中心軸線設置的突脊面,以及數個圍繞該中心軸線並分別位於兩兩相鄰的所述突脊面之間的凹槽,該等突脊面沿著該中心軸線延伸。利用前述突脊面壓靠在人體上進行按摩,以及使用者的手指可以穩定握拿在所述凹槽處,可以在結構新穎、簡單的情況下,提高按摩舒適性及增加按摩面積。