On March 20, 2022, the AD/PD 2022 International Conference on Alzheimer's and Parkinson's Diseases formally concluded in Barcelona, Spain. Held in a hybrid form spanning both online and offline and attended by neurologists and researchers across the globe, the six-day academic conference focused on topics including newest research breakthroughs, drug research and development, early diagnosis, and clinical studies around Alzheimer’s and Parkinson’s diseases and related neurological disorders. A symposium Gut Microbiota and Parkinson’s Disease: Implications for Pathogenesis and Treatment was hosted by Green Valley, where three Chinese and international experts shared insights into PD’s mechanism of action, pharmacological therapy, and non-pharmacological therapy.