15%。 The evaluation standard of Xingzhi Cup paper is not only the duplicate checking rate, but also the content quality, innovation, feasibility, practicability, demonstration method and conclusion. Among them, the duplicate checking rate does not exceed 15% is the most basic standard. More importantly, we should pay attention to in-depth research and thinking around the theme, reflect the author's innovation, speculation and practicality, and carefully write and improve the paper.