The algorithms of the log normal distribution curve fitting were used to plot their corresponding repair cost probability curves which were based on the concept of fragility curve and used the PGA as the independent variable. The damaged nonstructural components of hospital buildings during the Chi-Chi earthquake in 1999 were investigated in this study.The probability of repair cost of nonstructural components at a certain PGA can be predicted and evaluated from the repair cost probability curves. The seismic capacity, loss probability, and corresponding repair cost of the nonstructural components can be also considered by the building owners.