We think the chemical pre - scientific conceptions of students come from common experience , ordinary language , social environment and inconsonant analogy . on the basis of conceptual change theory and conceptual change teaching model , we construct the conceptual change teaching model in chemistry composed five phases 我们认为学生化学前科学概念主要源自:日常经验、日常语言、社会环境、学校教学和不当的类比,具有隐蔽性、顽固性、与科学发展史的一致性等特点。