The invention provides a convenient-to-install device for overhauling and protecting an electrical automation device. The convenient-to-install device comprises a rack, supporting rods, supporting legs, a control switch, a supporting frame, a hanging ring, fixing nuts, adjusting screw rods, an adjusting handle, an installing frame, installing holes, a movable rotating adjusting overhauling rod structure, a protecting rope structure preventing the device form falling during overhauling and a bendable moving adjusting overhauling illuminating lamp structure. According to the convenient-to-install device, by arranging the supporting frame, the fixing nuts, the adjusting screw rods, the adjusting handle, the installing frame and the installing holes, the electrical automation device can be rapidly installed and fixed, and the overhauling operation can be conveniently carried out; according to the size or model of the electrical automation device, the adjusting handle is rotated, and the adjusting screw rods are adjusted to act in the fixing nuts, so that the adjusting screw rods drive the installing frame to move through bearings, and the distance between the supporting frame and the installing frame can be changed; and through the installing holes, the electrical automation device can be fixed and installed thorough bolts so that overhauling can be conveniently carried out, and the operation is convenient.