With the rapid development of science and technology, the computer has increased not only the scope of people's vision greatly to make people's knowledge more rich, but also the space of accepting new things. This paper analyzes the application value and range of the laguage recognition technology of the computer in human society, discusses that after recording human voice into the computer using laguage recognition technology and doing a series of processing, it can complete what kind of processing and how to serve the human society.