The Bohai Sea, as a crucial northern sea area of China, is frequently affected by cold waves in winter, leading to frequent occurrences of sea ice. This poses a significant threat to marine engineering structures, especially economic ice-resistant structures. Ice-induced vibrations, as a primary manifestation of interaction between sea ice and structures, present immense challenges to the safe operation of marine engineering. Synchronous and real-time monitoring of structural conditions is an effective means to manage the risk of ice-induced vibrations during winter operations. Based on Internet of things (IoT) technology, this study conducts a risk warning analysis of ice-resistant structures in the Bohai Sea. The aim is to provide scientific basis and technical support for the safe operation of structures through real-time monitoring, data analysis, and prediction. By establishing a comprehensive IoT monitoring system and integrating key technologies such as temperature-depth profile measurement, ice situation image recognition, and structural attitude monitoring, real-time monitoring and early warning of ice vibration risks have been achieved. This effectively ensures the safety and economic efficiency of marine resource development in the Bohai Sea region.