Wind-resistant mechanism and roller shutter door

The invention provides a wind-resistant mechanism which comprises a wind-resistant piece, a tensioning adjusting piece, a locking piece matching piece and a reversing structure. Wherein the wind-resistant piece is used for supporting a door body of the roller shutter door, and one end of the wind-resistant piece penetrates through the ring phase structure and is connected with the locking piece; the tension adjusting piece is mounted at the other end of the wind-resistant piece; the matching piece corresponds to the locking piece; the locking piece is mounted at the bottom end of the roller shutter door body; when the roller shutter door is in a closed state and shakes under wind power, the roller shutter door makes contact with the wind-resistant piece, the wind-resistant piece is tensioned, the wind-resistant piece pulls the locking piece, the locking piece and the matching piece are matched and locked, and the wind-resistant piece supports a roller shutter door body. And when the roller shutter door is not