To incorporate a blind into a double glazing with an air space having a thickness of 12 mm.

In the double glazing with the built-in blind, the blind 6 is incorporated into the internal space 5 of the double glazing, screw shafts 14 and 15 are disposed to the right and left of the blind 6 and a worm gear 11 interlocked and rotated associated with the rotation of a pulley 9 in a blind operating device 7 mounted outside is installed into an internal space 5. The screw shafts 14 and 15 are interlocked and turned directly or by a transmission rotating shaft 18 by the worm gear 11. Lifting-lowering pipes 21 and 22 screwed to the screw shafts 14 and 15 are moved vertically while a weight 26 is secured to at least one of pipes, and the pipes 21 and 22 are connected at the lower end of the blind 6 by a stringy article 25 through fixed pulleys 24a and 24b.