Abstract: In a rocking chair device which assists sexual intercourse of old persons or handicapped persons to be made easy, especially wherein rapid rocking is secured in reasonable state and the safety is considered. The rocking chair device is provided with front and rear base plates which are made of a strong and non-flexible material such as band iron and are suspended and connected to a machine base frame and capable of being rocked in the front and rear direction, chairs which are arranged on the respective base plates through support columns and come close to each other, and a rocking device which rocks the chairs simultaneously in the direction of coming close to each other and getting away from each other. The rocking device supports a reversing shaft to the machine base frame at the intermediate position between both chairs in the orthogonal direction to the rocking direction of the chairs, and connects a rod moved linearly in the forward and rearward direction by rotation of a motor and the reversing shaft.