Abstract: The SIMD Arithmetic module is a critical module in the high performance DSP,which developed by us.This paper presents a new algorithm for SIMD instructions,and designs the circuits and layouts of the SIMD module based on 0.13μm CMOS technology.Based on the characteristics of the instructions,two level selection structure for results generation has been put forward,SIMD adder and compare for zero module have been designed with limited dynamic circuits. Simulation and timing verification after layouts are implemented automatically by using Nanosim tool.The delay after layout is under 750ps,which can meet the timing requirements of high performance DSP.