A primary object of the present invention is to overcome the disadvantage of the conventional chassis by providing a pull-out aiding device that can be easily, effortlessly and conveniently operated to pull out an apparatus from the chassis.

To achieve the above and other objects, the pull-out aiding device provided according to the present invention is configured for mounting on an object, which includes a first partitioning wall and a second partitioning wall located opposite to each other. In the object, a corresponding apparatus can be mounted. The pull-out aiding device includes a pulling member and a handle member. The pulling member is movably coupled with the first partitioning wall and includes a first pivot section and an abutting section. The handle member includes a second pivot section and an operating section. The second pivot section is pivotally connected to the first pivot section, such that the handle member is turnable about the second pivot section.

The handle member of the pull-out aiding device also includes a pressing section, which has a closing edge and a pulling-out edge. A vertical distance between the pulling-out edge and the second pivot section can be larger than, equal to or smaller than a vertical distance between the closing edge and the second pivot section