Abstract: Taking the No. 2 diversion steel gate of the Biedie River Hydropower Station's river-blocking gate at the Huaineng Toshikan River Branch Company as an example, this paper elaborates on the hazards caused by winter gate freezing. Through a comparative analysis of the practical effects of several conventional gate anti-freezing technologies, it proposes a solution of installing carbon nanotube electric heating films for gate operation in winter, which can address the anti-freezing issues and ensure normal gate operation, safeguarding both equipment and hydraulic structures.