A capsule-type endoscope system includes a plurality of receivers 201 and 202 for receiving image data from a capsule-type endoscope, a plurality of cradles 101 and 102 having slots into which the plurality of receivers are inserted, and an observation apparatus 301 connected to each of the cradles 101 and 102 by way of a cable. The image data is transmitted from the receivers 201 and 202 to the observation apparatus 301. The receivers 201 and 202 also store patient information including a patient ID, which is displayed on display units 203 and 204. The observation apparatus 301 displays patient information and a progress of image data transmission, associating them with identification information of a cradle.