A force sensing mechanism of the massage machine contains: a frame including a rotary shaft axially fixed thereon and displacing vertically on a second sliding rail of a massage chair a swing seat axially connected with the rotary shaft and including at least one roller, a connecting member axially coupled therewith, and another end axially connected with a stopping member, another end of the stopping member being axially coupled on the frame at least one sensing apparatus arranged on the frame relative to the stopping member so as to sense a movement of the stopping member, and the sensing apparatus being connected with a controller to transmit a sensing signal toward the controller so that the controller calculates a massage force of the roller.
