Device for safety protection of door and window opening

The utility model discloses a safety protection device for door and window openings, which comprises two L-shaped fixtures, two metal sleeves and two disc-shaped fixtures. According to the device for safety protection of the door and window opening, through cooperative use of the adjusting sleeve, the metal sleeve, the right-hand thread lead screw and the left-hand thread lead screw, the device for safety protection of the door and window opening can fix L-shaped clamps at the two ends of the device, then the metal sleeve is rotated to drive the adjusting sleeve to rotate, and therefore the total length of the device is pre-adjusted; the length of the device is slightly smaller than the size of the door and window opening, then the device is placed at the opening, the metal sleeve is rotated through the metal handle to enable the right-hand screw rod and the left-hand screw rod to extend and abut against concrete structures on the two sides of the door and window opening, and therefore the device for safety p