From the past to the present, individual applicants for admission to each university have a considerable number of vacancies each year. In recent years, some schools have begun to try to use some special methods to try to increase the distribution rate of individual application for admission, for example, changing the subject of verification, early or postponing the interview date, taking pre-distribution, and increasing the number of places to be reserved. This article examines whether the change in interview date could become one of the factors that influence the distribution rate of admission by application. We use the admission data of the 103-108 academic year of the X department as the research data, and use the event study method to check whether the change in the interview date of the X department in the 106 academic year affects the distribution rate, the correct screening rate and the number of students participating in the interview. We found that for the X department, the delayed interview date can improve the correct screening rate and distribution rate of the X department, but there is no clear evidence to prove capable of reducing the number of students participating in the X department interview.