Compared with the traditional software development,software development in DSP field requires not only to satisfy its functions,but also to meet the memory and MIPS limits strictly.In order to meet ends with these limits,DSP algorithms always need to be optimized after be programmed.This paper targets to illustrate some methods of code optimization on TMS320C67x DSP according to our practices in this field.These methods are very efficient in memory cutting down and program accelerating.Results of the experi...