Scientific ethics norms are mechanisms to regulate various interest relationships in scientific activities. It requires to coordinate subjects' behaviors in scientific activities and protect their interests with normative and directive requirements, including normative constraints on subjects' morality in scientific activities and guiding them to make proper behavioral choices. A systematic review on the research progress and trends of scientific ethical norms will help us to constantly improve its construction and its practical transformation, and will function better in optimizing the ethical governance on science and technology and in promoting them towards the better.