The utility model discloses an installation structure of a neck massager, which comprises a massager shell, an adjusting arm, a massager and a control panel, and is characterized in that the massager shell and the adjusting arm are both made of elastic materials, the control panel is fixedly arranged on the upper surface of the massager shell, the massager comprises a massager seat and a massager head, and the massager seat is fixedly connected with the adjusting arm. A part of the massager base is located in the massager shell and electrically connected with the control panel, through grooves are formed in the two sides of the massager shell, protruding blocks rotationally connected with the through grooves are fixedly arranged at the two ends of the adjusting arm, first grooves and third grooves are symmetrically formed in the inner walls of the through grooves, and second grooves are formed in the inner walls, opposite to the third grooves, of the protruding blocks. According to the massager, the adjusting arms can rotate around the through grooves, when the massager is worn, the openings of the two adjusting arms can be adjusted to be large so that the massager can be conveniently worn, after the massager is worn, the openings of the two adjusting arms can be adjusted to be small, and the two adjusting arms are positioned through the clamping blocks; and the massager is prevented from loosening after long-term use.