Curtain wall positioning device

The utility model relates to a curtain wall positioning device which is arranged on a connecter piece, the positioning device includes a fixing base, an adjusting base, a T-shaped bolt and a positioning screw, one end of the fixing base is provided with a notch, in which the adjusting base is inserted, one end of the adjusting base is provided with a sliding chute having the same diameter with the T-shaped bolt, the long handle end of the T-shaped bolt is arranged in the sliding chute, the nut end of the T-shaped bolt is provided with an internal thread slot which is connected to the positioning screw. Compared with the prior art, the utility model is advantageous in that the curtain wall positioning device can accurately position the glass lattice, reduces the error while installing irregular glass and allows the abutted seam of each glass plate to have the same width.