Civil defense door convenient to open

The civil defense door convenient to open comprises a door frame, door plates are symmetrically arranged on the inner side of the door frame, observation windows are embedded in the door plates, protective blocks are fixed to the positions, corresponding to the surfaces of the door plates, of the outer sides of the observation windows, and fixing handles are arranged on the positions, corresponding to the surfaces of the observation windows, of the inner sides of the protective blocks. A movable groove is formed in the inner side of the protection block, a movable block is arranged in the movable groove, the movable block and the fixed handle are in a fixed state, a brush is arranged at the bottom end of the movable block, and rolling wheels are symmetrically arranged at the two ends of the movable block corresponding to the two sides of the movable groove; by designing the fixed handle, the movable groove, the movable block and the rolling wheel, the surface of the observation windowis rapidly cleaned throug