本论文，利用LZW算法，它是利用字典结构实现了对文本的压缩和解压。并且对字典的结构进行了改进，使用了两个字段来表示，减小了内存的使用，和运行时间。-In this paper, using LZW algorithm, which is the use of the dictionary structure of the text of the compression and decompression. And the structure of the dictionary has been improved, the use of the two fields to express, to reduce memory use, and run-time.