The invention relates to a bottle outlet device for a bottle blowing machine. The bottle outlet device comprises a supporting plate, and a plurality of claws are evenly arranged on the supporting plate in the length direction of the supporting plate. Each claw comprises a fixing plate, a fixed claw body is arranged at one end of the fixing plate, and movable claw bodies of a first movable claw body and a second movable claw body are arranged on the two sides of the fixed claw body in a rotary manner; semicircular clamping grooves are formed in the two sides of the fixed claw body, one side, facing the fixed claw body, of the first movable claw and one side, facing the fixed claw body, of the second movable claw; and the semicircular clamping grooves can form a first clamping opening and a second clamping opening which are matched with bottle necks. A driving mechanism for driving the first movable claw bodies and the second movable claw bodies to rotate is further arranged on the supporting plate. Compared with a traditional bottom outlet device, the claws of the bottle outlet device can clamp two bottles at the same time on the premise of installing the same number of claws. However, traditional claws can only clamp one bottle. Thus, the bottle outlet efficiency is improved by once, the work time is greatly reduced, and the yield is improved.