Abstract: In order to upgrade the coal-pulverizing system of a certain thermal power plant, it is necessary to reinforce the steel structure of the coal bunker building to ensure the safe operation and functional improvement of the new coal-pulverizing system. During the renovation process, not only a three-dimensional model of the entire power plant was created, but also the renovation was carried out in combination with the equipment layout on the premise of not changing the structural stiffness and force-transfer path. Horizontal supports were used to transfer horizontal forces, and the bracing of vertical supports was increased to reduce the calculated length of columns. Eventually, the need to reinforce the frame columns during traditional renovations was avoided. The entire renovation design is safe, economical, and reasonable. The renovation method in this paper provides a novel reference for the upgrade and renovation of industrial plants by taking an alternative approach, contributing to the green, efficient, and sustainable development of China's power industry.