On December 7, 2017, Professor Cuilin Zhang, member of the Advisory Committee of experts, held an academic exchange meeting subject "basic Research on the Establishment and Application of Chinese population Auxiliary Reproductive population and progeny cohort" in Conference Room G207. All the teachers of the birth cohort Research Center attended the exchange meeting. The meeting was chaired by Professor Zhibin Hu. First, teacher du Jiangbo, member of the Center of birth cohort Research, Nanjing Medical University, briefly reported the progress of cohort construction in the past year. After the report, Professor Kuilin Zhang fully affirmed the progress made in the birth cohort of the year, and then communicates with all the backbone teachers of birth cohort research center in the aspects of birth cohort construction, sample collection, system optimization, personnel finance, data sharing and gives some guiding opinion.