The present invention discloses the preparation of an internal massager andthe applicationthereof. The internal massager consists of a massage ball, a rod, a protectingcover and a handle.The preparation of the internal massager includes the following steps: weldingthe massage ballto one end of the rod first, tightly connecting the other end of the rod withthe protecting cover,and then welding the handle to the side of the protecting cover away from therod, thereby toproduce an internal massager; the internal massager massages and stimulatesthe throat,esophagus, and rectocolic surfaces, which promotes the local or systemicnervous-humoralreactions, improves the immune function of the body, and promotes the recoveryof chronicdiseases and physical weakness. The internal massager provided by the presentinvention has asimple preparation method, and the prepared internal massager has a wide rangeof application,significantly stimulatory effects in vivo, and therefore it has promotingeffects on the recoveryof chronic diseases and physical weakness.