[Infodemiology: past, present and future].

The internet era has brought a dual impact on epidemiological research: on one hand, it has expanded the breadth and depth of public health surveillance, enriching the formulation of strategies for early warning for public health emergencies and infectious disease outbreaks, disease prevention, and health promotion through vast medical information resources. On the other hand, it has triggered the issue of "infodemic", wherein the rapid spread of misinformation disrupts public perception, weakens the effectiveness of public health responses, and adds complexity to the management of public health emergencies. This paper focuses on representative research areas of infodemiology, for example, infodemic caused by inforus, and explores its future development trends and potential challenges with the aim to deepen infodemiology research and optimize public health practice.