The essay is to study the necessity and key issues of planning workplace ethics course of vocational high schools and to stimulate the discussion based on the analysis of collecting documents from home and abroad. The essay tries to study further the necessity of planning Ethics course of vocational high school from the different aspects of the student education, on the spot teaching and workplace. Through the summary and clarification of the relevant crucial issues, the essay attempts to provide four practicable strategies as the reference for planning and excusing workplace ethics course in post-secondary education, which are the arrangement of teachers and lessons hours, teaching contents, and studying strategies.