The utility model provides a ring network cabinet pushbutton blocking device and a ring network cabinet. The ring network cabinet pushbutton blocking device comprises a shielding panel, a hinge, a fixed plate, and a lock catch. The shielding panel and the fixed plate are connected by a method that the shielding panel and the fixed plate are reversible to each other. The shielding panel is provided with a locking operating position and an unlocking operating position. When the shielding panel is on the locking operating position, a first locking portion arranged on the shielding panel and a second locking portion arranged on the fixed plate are connected in a cooperating manner. The shielding panel shields in front of a pushbutton under the locking state, so an operator cannot touch the pushbutton, and latch-up protection of the pushbutton is realized. When the shielding panel is on the unlocking operating position, the first locking portion and the second locking portion are separated. The device is installed on an electrical device. The blocking device ensures the locked pushbutton can be operated only when the pushbutton obtains authorization. Problems that pushbutton management is not in place in the ring network cabinet in a distribution network system, and random operation causes misoperation accidents easily are solved, thereby effectively improving security guarantee on operators and equipment.