After subjects take part in the Mongolian Standard Speech Test, they have some divergent opinions about their tested results. In order to eliminate these divergences of the test results, a new window is opened to employ a kind of software to assist the testing of the Mongolian Standard Speech based on the comparisons of language features. Specifically speaking, after the subject's speech data are entered into the software file, their language features are withdrawn, analyzed and compared with the corresponding standard sounds, and then the overall testing result is given according to their similarities. In addition, the software is capable of mapping out their waves and formants and other graphs on the screen, reflecting each compared pair of speech sounds in a more direct way.