The utility model relates to a massager which can effectively massage therapy parts from the side face of the waist to the side faces of the buttocks. The massager (1) is in a U shape and is provided with a main part (3) and a pair of extension parts (4), wherein the main part (3) is provided with a built-in driving part (2), and the extension parts (4) extend from the left end and the right end of the main part (3) in a supporting leg shape. According to the structure of the massager (1), the extension parts (4) approach each other or depart from each other in the width direction under the action of driving force of the driving part (2) so that the massager can squeeze and massage therapy objects located between the extension parts (4).
