On 6-7 November 2018, the Symposium on 'Influence and Evaluation of Intercepting Carbon and Nitrogen Cycle and Transport in Southwest Rivers in China', a National Key Research Program led by ISESS of Tianjin University, was held in Wuhan. More than 30 scientists and postgraduate students from TJU, Shanghai University, Hohai University and Chinese Academy of Science (CAS) participated in the symposium and exchanged their ideas and working progress.