A specific site location measuring method according to the present invention, includes: calculating matching degrees based on a plurality of transmission images imaged by use of radiation transmitting through a specimen and a template set； selecting a template transmission image from the plurality of transmission images based on the matching degrees； adding a new template generated based on the template transmission image, to the template set； imaging a location measurement transmission image by use of radiation transmitting through the specimen； selecting an optimal template that is the most similar to a portion of the location measurement transmission image, from the template set by performing pattern matching of each of templates of the template set with the location measurement transmission image； and calculating a specific site location based on the location measurement transmission image and the optimal template. At this time, the transmission image of the specimen has a high probability that it is similar to any template of the thus-generated templates. Therefore, in the specific site location measuring method, the specific site can be measured with higher precision.
