Abstract: Program parallelizing tools have become one of the popular research projects in the field of parallel processing as they can effectively solve the code portability between different parallel architectures and significantly reduce the difficulty of using parallel computers. With the more and more widespread application of parallel processing systems,they will also be developed and perfected continuously. In this paper, we emphatically introduce the research situation of parallelizing techniques and tools, and then propose some viewpoints about the trend of their development in the future.