The present invention discloses a counterweighted vibration device and a manufacturing method thereof. The counterweighted vibration device includes a shell provided with a hollow cavity and a vibration assembly, wherein the shell is provided with two elastic support structures located at two ends of the vibration assembly, and the shell is further provided with slots configured for passage of the two ends of the vibration assembly and to be in communication with the hollow cavity; the vibration assembly includes two counterweights each located at one of the two ends thereof, short strong magnetic strips each adjacent to one of the counterweights, a long strong magnetic strip located between the two short strong magnetic strips, and two fixing screws located on two sides separately and configured to couple the counterweights, the short strong magnetic strips and the long strong magnetic strip together; the vibration device further includes two coils, and a change in a current flowing through each of the two coils causes a magnetic force to change, so as to produce vibration of the vibration assembly in proportion to the change in the current; and the counterweights are of a non-magnetic material. In the present invention, a magnetic field generated by the short strong magnetic strips and the long strong magnetic strip is limited to a smaller range, so that the movement range of the magnetic field of the vibration assembly during vibration is reduced, thereby reducing the influence on the coils and providing a better vibration effect.