Civil air defense door convenient to construct and install

The utility model discloses a civil air defense door convenient to construct and install, and relates to the technical field of civil air defense door installation, the civil air defense door comprises a civil air defense door and a wall body, one side of the civil air defense door is connected with a fixing block through a hinge, the end face of the fixing block is provided with a clamping groove, and a mounting groove is formed in the position, located in the wall body, of the lower portion of the fixing block. A moving rod is arranged in the mounting groove, a power gear rotationally connected with the inner wall of the wall body is mounted at one end of the moving rod, a reset spring fixed to the inner wall of the wall body is connected to the bottom end of the moving rod, and driving gears are rotationally connected to the positions, located on the inner wall of the wall body, of the two sides of the fixing block. According to the civil air defense door, the fixed block, the movable rod, the power gear,