To provide a blind which can inhibit blades from moving in a lengthwise direction of the same.

In the blind, a small through hole 6 is formed in each blade 1 at a midpoint in a widthwise direction W. Then a deviation inhibiting ball 4 for inhibiting the blade 1 from moving in the lengthwise direction L of the same is arranged in the small through hole 6. The deviation inhibiting ball 4 has a thread insertion hole formed therein. Further a front thread 2 and a back thread are inserted into the thread insertion hole. Herein the front thread 2 is arranged on a front 1a side of the blade 1 while the back thread is arranged on a back side of the same in order that the front thread 2 and the back thread do not to intersect each other in front and back directions.