The graduation thesis of Ningxia Institute of Technology is better. According to the website related to graduation thesis of Ningxia Institute of Technology, students whose duplicate checking rate is less than 20% can be considered as qualified. In order to keep the duplicate checking rate of papers below 20%, students need to master enough information retrieval skills and pay more attention to originality. When writing a paper, students should try their best to use their original thinking, reduce the repeated use of other people's papers, and ensure the originality of the paper.