At the invitation of the Commonwealth Scientific and Industrial Research Organisation, a scientific research delegation organized by Tsinghua University went to the Murray Darling Basin in Australia for a one-week field excursion in April 2018. The delegation went upstream from the mouth of the Murray Darling River to Canberra, and conducted in-depth exchanges with Australian counterparts and farmers. The research status of hydrology-climate, risk management of extreme hydrological events, water management systems, and climate change mitigation are further understood. The results are beneficial to understand the atmosphericland surface-hydrological interaction mechanism of multi-temporal scale and its impact on natural forcing and human activities, to uncover the response mechanism of forced and underlying human activities, to reveal the dynamic evolution of energy-water cycle and the causes of extreme hydrological events in the global climate system, to construct a risk management system for extreme hydrological events in the context of global warming, and to propose China’s adaptive countermeasures.