Safety door frame for metal doors and windows

The utility model discloses a safety door frame for metal doors and windows. The window comprises a window frame, limiting grooves, telescopic holes and telescopic grooves. Limiting blocks are installed in inner cavities of the limiting grooves, hexagonal holes are formed in the middles of the top ends of the limiting blocks, telescopic columns are installed in inner cavities of the telescopic holes, threaded holes are vertically formed in the middles of the telescopic columns, threaded rods are vertically installed in the middles of the bottom ends of the limiting blocks, the threaded rods are inserted into the threaded holes, and telescopic plates are inserted into inner cavities of the telescopic grooves. According to the utility model, the hexagonal wrench is inserted into the hexagonal hole; hexagonal wrench, the hexagonal wrench drives the limiting block to rotate through the hexagonal hole; the limiting block drives the threaded rod to rotate, and the threaded rod rotates to drive the telescopic column