Within one month after the defense. According to the relevant information of Beijing Normal University, it is known that the time for the defense of online education dissertations in this school is within one month after the defense. Beijing Normal University is a national key university directly under the Ministry of Education of People's Republic of China (PRC), which is jointly established by the Ministry of Education and Beijing. Ranked as "Double First Class", "985 Project" and "2 1 1 Project", it is one of the first ten key universities in the Seventh Five-Year Plan and the Eighth Five-Year Plan. He is a member of China University Planetary Science Alliance, Jinggang University Alliance and Guangdong-Hong Kong-Macao Greater Bay Area Logistics and Supply Chain Innovation Alliance.