As an important theoretical achievement of modern semantics research,semantic field theory laysthe theoretical foundation on the vocabulary instruction. This article,in the view of semantic fieldtheory,expounds the effectiveness of semantic field on micro English vocabulary instruction andfurther probes into strategies of Micro-lecture Design,including the methods of lexical-seman-tic group,word-meaning in context,word-association and root-affix approach,which will help theunderstanding of vocabulary,the memorizing of vocabulary and the digestin...