A massaging device includes a housing having a chamber and a number of grooves communicating with the chamber of the housing, the housing has a number of massaging protrusions, a casing is engaged in the housing and includes a number of massaging projections slidably engaged with the grooves of the housing, and a cover is secured to the casing for moving the casing relative to the housing and for moving the massaging projections of the casing relative to and along the grooves of the housing respectively. The casing includes a number of beams each having a number of massaging projections. The cover includes a number of catches engaged with the beams for securing the beams of the casing together.
