Abstract: Aiming at the problem that most of the output energy of laser single-beam processing of two-dimensional codes is wasted and the processing efficiency is low, this paper adopts a multi-beam parallel processing method to improve the processing efficiency. The simulation studies the effect of the QR code processing filling rate, and contrast on recognition rate, and recognition time, and obtains a QR code recognizable range. Then use the femtosecond laser based on the parallel processing technology of the spatial light modulator to conduct experiments, and analyze the contrast and processing fill rate of the experimental results. The analysis results show that within the range of the QR code reading evaluation standard, the greater the processing filling rate is, the lower the recognition rate and the longer the recognition time are; similarly, the lower the contrast is, the lower the recognition rate and the longer the recognition time are. At the same time, experiments were performed on the single-beam laser processing of two-dimensional codes. The comparison of processing time and other parameters of the parallel processing and single-beam processing was analyzed, and the efficiency of the parallel processing was about 10 times higher than that of the single-beam processing.