Abstract:SNOW3G and ZUC algorithm are both the heart of secure algorithm sets in 3GPP LTE-Advanced, and have become the 4G mobile broadband communication standard. SNOW 3G algorithm is widely applied because it arose much earlier than ZUC algorithm which is designed by China and adopted as international standard in 2011. In order to compare the implementation performance of two algorithms, in this paper we firstly analyse the structures of both algorithms, and then propose the FPGA schemes and implement them. Modelsim is used to simulate the designs, and QuartusⅡis used to synthesize the designs. The simulation and synthesis results show that ZUC algorithm is better in area overhead and power consumption, but worse in data throughput rate.