The invention provides a zero-twist feeding system for flattened wefts of weaving of weaving. The zero-twist feeding system comprises a picking back device, a weft insertion device, a weft receiving device and beating-up devices, wherein the picking back device is arranged at the front end of the weft insertion device, the weft receiving device is arranged at the rear end of the weft insertion device, and the beating-up devices are arranged at the inlet end and the outlet end of the weft receiving device. The motion of the zero-twist feeding system is controlled and sensed by combining pneumatic-electric drive with the light-sensing laser technology, the tension, thickness and width of the flattened wefts can be set and monitored according to needs so as to conveniently regulate the tension, thickness and width timely, the flattened wefts are fed into the cloth-fell of fabric without twist, bending, friction fluffing, edge curling and gaps during weaving, the requirements such as flatness, even yarn width, even thickness and low gap rate of the flattened fabric are satisfied while the shortest waste edge is achieved, and raw material loss and cost can be lowered to the maximum extent.