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.