Translation theory plays a guiding role in translation practice and is also an important part of translation teaching.In the field of translation teaching and research,Lu Siyuan proposes seven ideas to show the direction for translation teaching practice and research.In the translation practice,Lu Siyuan advocates "dynamic equivalence" rather than "formal equivalence".His study and interpretation of sense of hierarchy in translation has integrated the essence of various translation theories,thus resulting in strong operability.The author applied his research results to Japanese translation teaching to help students to achieve "deep translation" from such aspects as grammar,vocabulary,content and background elements,and achieved significant progress.