Abstract: Disclosed is a vibration isolating table device in which a table body is supported on a base plate in the floating state through a vibration isolating device in order to isolate a tool or an instrument mounted on the table body from externally applied vibrations. In the vibration isolating table device, a magnetic plate and a magnet are respectively fixed on one and the other of mutually-opposite surfaces of the base plate and the table body so as to apply a force to the table body in the direction against an upward force applied to the table body by the vibration isolating device to thereby fix the table body. An end of a swing member is attached on the lower surface of the table body at the center portion thereof, and a weight is attached to the other end of the swinging member, so that the table body is caused to swing in response to an external force applied to the table body.