2015　　　　 关瑜桢，Equant概念的历史发展，第九届全国数学史学会年会大会报告，中山大学，广州。

2014 　　　 Yuzhen Guan. “The Transmission of Knowledge between Chinese Astronomers in the 2nd century AD,” The Circulation of Astronomical Knowledge in the Ancient World Conference, Providence, United States.

2013 　　　 Yuzhen Guan. “Eclipse Prediction in Early China from the Eastern Zhou Dynasty to the adoption of the Jing chu li in AD 237,” the 24th International Congress of History of Science, Technology and Medicine, Manchester, United Kingdom.

2012　　　　 Yuzhen Guan. “A New View on Solar Eclipse Records in Pre-Qin Period,” the 222nd American Oriental Society Meeting, Boston, United States.

2011　　　　 Yuzhen Guan. “A Review on the Meanings of Definitions and Algorithms in the Jing chu li,” the 13th International Conference on the History of Science in East Asia, Hefei, China.

2009　　　　 Yuzhen Guan. “A Study on Ying Biao Yi——A New View on the Important Document in the History of Metrology in China,” the 23rd International Congress of History of Science and Technology, Budapest, Hungary