Recently,the schema theory has been accepted by more and more people. Quite a lot scholars explored its application to the teaching of English reading comprehension.Some of them also applied this theory to the teaching of English listening comprehension.It is generally thought that the application of schemata is a kind of help to the understanding of texts.In this article,the author rethinks the function of the schema in listening comprehension activities and thinks that: 1) we should look dialectically upon the function of the schema,since the process of listening comprehension is much more complex than that of reading comprehension.2) the perception and decryption of the phonetic information are the key elements of the listening comprehension.3) the types of leading schemata are different to different learners.