More than three years. According to the query of official website of Jining Medical College, the undergraduate thesis files of Jining Medical College are supervised by the education department of the school. If the filing time exceeds three years, the relevant departments of the Education Bureau will conduct an audit within three to five years. Undergraduate graduation thesis (bachelor's degree graduation thesis) is a thesis that needs to be completed during undergraduate study and submitted before obtaining a bachelor's degree. It is one of the important parts of teaching or scientific research activities.