The two-dimensional motion mixer is mainly composed of three major parts: the drum, the swing frame, and the machine frame. The drum is mounted on the swing frame, supported by four roller wheels, and axially positioned by two stop wheels. Among the four support roller wheels, two drive wheels are driven by the rotating power system to rotate the drum; the swing frame is driven by a set of crank pivot mechanisms, which are mounted on the machine frame. The swing frame is supported on the machine frame by a bearing assembly.