Among all of the research related to building fire safety assessments, only a few are focused on multi-purpose buildings. However, there are many multi-purpose buildings in metropolitan areas. Because of the unique fire characteristics of multi-purpose buildings, fires in these buildings often cause severe loss of life and damage. Statistical data over the past 20.5 years detailing the number of fires and building floor area published by the government has been used to acquire the fire probability, frequency, and cycle for each building category. By applying a matrix calculation, the fire probability, frequency, cycle, and risk ratio for each functional area within a multi-purpose building are obtained. With assistance from the government, the fire case investigation and statistical data for building fires were established. By adopting the risk ratio concept, the weight values for 20 fire safety assessment criteria and four fire safety strategies for a multi-purpose building were acquired to indicate the possible causes of fires and the quantitative extent of fire influence. Language: en