The introduction of the paper is also called preface. Usually placed in front of the paper, it gives a preliminary introduction to the research involved in the paper, usually one or several short paragraphs. Generally speaking, the introduction of the paper is the preface of the paper.

Usually, the introduction of a paper should cover the following points: What is the research background of this paper? What is the point of this paper? What is the research method of this paper? Is the design method reasonable? What new discoveries can be made? Is it of academic value?

The preface should include: Why do you want to do this research? What is the theoretical or practical basis for setting the topic? What's the innovation? What is the theoretical and/or practical significance? First of all, it is necessary to introduce the historical background and theoretical basis of this topic, the research progress and achievements of predecessors or others on this topic, and whether there are different academic viewpoints in academic circles. Tell the reader clearly why you want to do this research, and the sentences should be concise and straight to the point.

If the research project has never been carried out by others, then the innovation is obvious, and the innovation of the research should be explained. But in most cases, research projects have been carried out by predecessors. At this time, it is necessary to explain the differences and essential differences between this research and that research, rather than simply repeating the work of predecessors.