AI Co-scientist is a multi-agent AI system developed by Google Research to assist scientific research through artificial intelligence techniques. Built on Gemini 2.0, the system simulates the reasoning process of scientific methods, generating new research hypotheses and experimental plans. Through multi-agent collaboration, utilizing mechanisms such as generation, reflection, ranking, and evolution, it continuously optimizes its output. The main advantages of AI Co-scientist include the efficient generation of novel scientific hypotheses, strong interdisciplinary knowledge integration capabilities, and collaborative capabilities with scientists. Currently in the research phase, the system is being validated for its application potential in fields like biomedicine through partnerships with leading global research institutions.