A solution is the microorganism testing apparatus equipped with a pre-processing unit in which, if a content of microorganism testing on a specific specimen is selected or input, testing conditions of the specimen read from a storage device in which testing information specifying the testing conditions of the specimen is stored are printed on a sheet-form medium to be used for testing of the specimen, and a post-processing unit in which, if an image of the medium is read, the testing conditions printed on the medium and a type of the medium preliminarily labelled on the medium are acquired from the image to output judgment results as to whether or not the testing conditions acquired from the image, and the type of the medium are compatible.