The 7th International Meeting on Quadruplex Nucleic Acids will be held at Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, China, on September 6-9, 2019. The International Meetings on Quadruplex Nucleic Acids, organized bi-annually since 2007, are the major conference series in the field of quadruplex nucleic acids and guanosine self-assembly. This is the first time to host the meeting in China. It will provide an excellent platform for researchers to discuss recent progress in the area and chart future directions.