Under the background of global warming, the abnormal changes in the climate system have increasingly significant impacts on human society. The widespread temperature anomaly events in China at the beginning of 2025 further highlighted the crucial influence of tropical Pacific sea surface temperature fluctuations, such as La Niña events, on regional climate. This paper analyzes the mechanism by which La Niña events affect winter temperatures in China to enhance the understanding of the occurrence patterns of disastrous weather. By comparing the disaster losses and response measures during the 2008 severe cold, rain, snow and ice disaster in southern China, it proposes countermeasures and suggestions for responding to disaster events from aspects such as management systems, technical support, material reserves, and post-disaster reconstruction, with the aim of promoting the transformation of disaster risk governance from reactive and passive responses to proactive early warnings and rapid responses.