<p>Apparatus for filling a proper container with a highly viscous fluid substance comprises a tank 31 for receiving the fluid substance of high viscosity; a communicating means provided with a means for discharging the substance at a constant flow rate and communicating with the tank; a filling nozzle 37 connected to the discharge side of the communicating means and disposed so that a downward oriented discharge outlet 60 thereof is positioned just above a path of a conveyor for transporting containers C; an arm 36 having an upper portion and a lower portion and to which the filling nozzle 37 provided with a spool 61 is mounted on the lower portion thereof; a horizontal shaft 35 supporting the arm in a freely rotatable and reversible manner at the upper portion thereof; and a means for vibrating the arm on the horizontal axis serving as the vibration center. This filling device makes it possible to fill the container with a fluid substance having a high viscosity as smooth as possible without filling the container to overflowing since it is provided with a mechanism for vibrating the nozzle for filling the container with the substance.</p>
