The invention relates to an interactional experimental device for a power tool-base-foundation system. A power tool and a base are connected in a bolting mode. A beam is connected with an upright in a sliding mode so that the characteristic of a combined face can be introduced and replacement of uprights of different structures and beams of different structures can be achieved. The base bonded to base boundary simulation rubber is filled into filling earth in a filling cavity. The filling earth in the filling cavity can be replaced. A manual cut-out zone with a cone serves as a boundary of the filling cavity. The experimental device is supported through a leveling device and is capable of being used for researching the static characteristics, the movable characteristics and differential settlement of the power tool-base-foundation system and enabling different types of tools and different types of earth to be conveniently replaced for experiments.