The paper, based on the three standards of Standards for Foreign Language Learning in the 21st Century, A Common European Framework of Reference for Languages: Learning, Teaching, Assessment, and the International Curriculum for Chinese Language Education, is designed to discuss the issue of culture teaching idea in different standards. Through the comparison and analysis of the three standards, this thesis suggests that the idea can be classified into the subjective, objective and necessary. The ideas of subjectivity and objectivity are made to study the essence, content and classification of an object, and the ideas of objectivity and necessity are created to deal with the affairs of target and way. Thus, a study on the idea of culture teaching as the second language is to answer the following three questions: the definition and content of the culture in teaching as the second language, the orientation of culture teaching as the second language, and the target and way of culture teaching as the second language. We hope that by the analysis of the above issues, we can get a further understanding of the idea of culture teaching as the second language, making Chinese substantial reference as the culture teaching of second language.