This paper investigates the critical factors influencing cutting efficiency and quality in practical production applications, focusing on the use of a 355 nm wavelength laser to cut 1mm thick carbon fiber plates. Under the premise of ensuring the free drop of the cutting area, the single factor control variable method was used to explore the effects of duty cycle, slit width and spot overlap rate on cutting quality and cutting efficiency. The results show that the extreme parameter values negatively affect cutting efficiency, with the duty cycle ratio exerting the most significant impact. The thermal impact on the cutting edge is similar to the trend of the amount of edge collapse, while the greatest impact on the cross-sectional taper is the change in seam width. Under the condition that the thermal impact is less than 225 μm, edge collapse is less than 85 μm, and the taper is less than 0.1, the minimum time required to make it fall automatically is 26.44 s.