The aging of engineers and labor shortages are the problems in high-place work such as infrastructure inspections. The use of drones for inspection work is being considered, but it is difficult to perform work such as hammering test by hovering. We have developed a wall adhesion drone with a universal vacuum suction gripper (UVG) on the front of the aircraft. UVG is a vacuum sucker adsorb to uneven surface with deformable skirt. We call this drone as UVG drone. This UVG drone can hold itself by adsorbing it on the wall and stop the propeller, so stable and long operation is possible. Furthermore, in order to expand the work range, we also developed a child machine with work equipment. The child machine is suspended from the adsorbed UVG drone. UVG is also mounted on the child machine. We report that drilling work on concrete wall with child machines was realized by this drone system.