Vocabulary learning is serving as an essential role in language acquisition. Although traditionally there are debates over vocabulary learning, studies of vocabulary has recently gained much more attention at an academic level. This article shed lights on how to further vocabulary learning by the mechanism consisted of recycling, repetition and retrieve. By elaborating the conception of this mechanism, this article reached a conclusion that, for one thing, it can help teachers and administrators set appropriate targets for learning in order to encourage learners to obtain vocabulary learning skills that are expected. For another, vocabulary items must not only be known but also be known well so that students can use the vocabulary automatically and accurately.