The structure importance in Fault Tree Analysis(FTA) reflects how important Basic Events are to Top Event.Attribute at alternative level in Analytic Hierarchy Process(AHP) also reflect its importance to general goal.Based on the coherence of these two methods,an improved AHP is put forward.Using this improved method,how important the attribute is to the fire safety of public building can be analyzed more credibly because of the reduction of subjective judgment.Olympic venues are very important public buildings in China.The fire safety evaluation of them will be a big issue to engineers.Improved AHP is a useful tool to the safety evaluation to these Olympic venues,and it will guide the evaluation in other areas.
