Abstract: This article analyzes two cases of infectious diarrhea caused by norovirus-contaminated drinking water in Guangxi Zhuang Autonomous Region, China, from 2017 to 2018. The two cases were described and analyzed in terms of onset, solutions, treatment outcome and reasons, and recommendations for future prevention of outbreak were given based on the main issues identified in case analysis, including the suggestions for technical and management measures, so as to provide a reference for the prevention and control of the outbreak of related infectious diseases.