Three-dimensional and underground public bus garages have been promoted in accordance with the policy of efficient use of urban spaces and complexation of public facilities. However, due to the concentration of large buses, confined spaces, and the expansion of eco-friendly buses (electric and hydrogen), there is a risk of large-scale damage to life and property in the event of a fire. The purpose of this study was to derive fire safety awareness targeting three-dimensional public bus garages. To this end, the suitability of the fire safety awareness evaluation items was verified by applying the Delphi technique to the fire expert group, and the relative importance and priority of evaluation factors were derived by using the AHP (Analytic Hierarchy Process) technique. It was found that fire prevention is important for securing fire safety in three-dimensional public bus garages, and ignition source management is important among fire prevention. It is judged that the results of this study can be used as basic data for the design and policy establishment of fire and disaster prevention in three-dimensional bus garages.