Assisted-CO2 laser glass cutting method has been introduced. 0.8 mm thick borosilicate glass has been cut with 100 W slab CO2 laser, 450 mm/s speed. With suitable heating/cooling technic, high speed, high quality, precision and accurate cutting of glass have been achieved. Side intensity of glass cut by laser method is obviously higher than traditional method. The cutting speed model has been reported and calculated, the same as experimental results. The parameters which affect cutting have been discussed. It’s feasible to increase cutting speed by output power enhancement.