Less than twenty percent. According to official website of China Education Examinations Institute, graduation thesis can be divided into bachelor thesis, master thesis and doctoral thesis. Due to the rise of the degree level, the quality of the thesis is also relatively increased, and the repetition rate of bachelor's thesis is required to be below 30%. The duplicate checking rate of master's thesis should be below 20%; The repetition rate of doctoral research papers is required to be below 15%, so the duplicate checking rate of master's journal papers is below 20%.