Openable and closable working table outside subway end door

The utility model provides a subway end door outside workbench capable of being opened and closed, which comprises a supporting base, a foldable fixing frame and a supporting platform, the foldable fixing frame and the supporting platform are installed on the supporting base, the foldable fixing frame comprises a fixing frame and a rotating frame, the fixing frame is installed on the supporting base, the rotating frame is rotatably connected with the fixing frame, and the supporting platform is installed on the supporting base. Two parallel sliding rods are arranged between the fixed frame and the rotating frame, one ends of the two sliding rods are rotationally connected with the fixed frame through first rotating shafts, the other ends of the sliding rods are connected with the rotating frame through second rotating shafts, the supporting platform is fixed to the rotating frame, and when the rotating frame is folded or unfolded, the supporting platform can be folded or unfolded. And the supporting platform