To provide an earthquake damage predicting device, an earthquake damage prediction method, and an earthquake damage prediction program, capable of predicting with high accuracy damaged situation of buildings due to earthquakes.

A plurality of earthquake waves in a region, where the building which is an object of damage estimation is built, are generated in each of a plurality of magnitudes by changing the phase by using random numbers (step 200), and response analysis by a building model by using the plurality of generated earthquake waves is performed (steps 202, 204). Then, the damage state of each member used in the building is derived (steps 206, 208), and the damage degree to the building caused by the earthquake motion is predicted, based on the damage state (steps 210-218), and the prediction result is outputted (step 220).