The theory of iconicity is widely applied in different fields such as poetry, novel, advertising and English-Chinese comparison but scarcely is it utilized to the combination of English teaching and iconicity theory in cognitive linguistics. This paper discusses how iconicity theory can be used in English teaching by literature research method. Once teachers become familiar with iconicity theory and apply it to their teaching activity, English teaching and learning would be encouraged for they are a rewarding journey, promised with a host of knowledge.