Abstract: In order to resolve the fire protection design difficulties of different construction projects in urban renewal development，this paper puts forward that the fire protection design should be carried out according to the different protection requirements and performance objectives, and the fire protection safety of the whole building should also be considered, the fire protection design ideas and methods are put forward for this kind of special construction projects for the activation and utilization project of the combination of cultural relics and existing buildings. At the same time, this paper selected a project as the research object, and put forward different fire-fighting compensation strategies for different areas and overall fire-fighting promotion measures. Firstly, the effectiveness of fire compensation measures were verified by FDS and Pathfinder; The overall fire safety level of the optimized design was calculated by the fire safety assessment, the fire safety level means the project had the technical conditions of fire safety for using, and was not lower than the original fire safety level. It provides reference for similar renovation projects.

Key words: cultural relics, existing building, performance objectives, fire protection renovation design, fire safety assessment