The invention discloses a liquid crystal display panel line laser cutting machine. The machine comprises a machine frame, an electric cabinet, a human-computer interface, a laser generator box body, an industrial computer, a laser head, a material receiving mechanism, a feeding mechanism, a turnover mechanism, a laser carrying table mechanism, an unloading mechanism, a transferring platform, an NGpiece arranging module, and a discharging mechanism, wherein the material receiving mechanism, the laser carrying table mechanism, the transferring platform and the NG piece arranging module are sequentially arranged on the machine frame, the feeding mechanism and the unloading mechanism are correspondingly located on the left side and the right side of the laser carrying table mechanism, the turnover mechanism is arranged close to the material receiving mechanism, and the discharging mechanism is arranged close to the transferring platform. The machine has the characteristics that the red light and green light can be freely switched and used, the requirements of different products can be met and the use is convenient, the use is not limited and the universality is high, the equipment investment cost is low and the utilization rate is high, front side cutting and reverse side cutting are available, no metal residue is generated and the product is not damaged, the yield is high, the raw material waste is little and the raw material cost is low, the material receiving, feeding, overturning, unloading, discharging and the like are assembled together and are automatically completed, manual operation intervention is not needed, and the operation is intelligent and simple.