What is the content of the introduction of the paper?

Introduction, the introduction of the paper, as the beginning of the paper, should briefly introduce the writing background and purpose of the paper, the origin and realistic requirements of the research, as well as the preliminary work and research survey in related fields, explain the relationship between this research and the preliminary work, the current research hotspots, existing problems and the author's work significance, and lead out the theme of this paper to guide readers.

The introduction of the paper can also write out the theoretical basis, experimental basis and research methods of this paper, and briefly explain its research content; A few words foreshadow the results, significance and prospect of this study.