An information processing device (50) includes a communication unit (55) that communicates with a receiving device (30) that receives image data transmitted from a capsule medical device (10) at a predetermined imaging interval (D1), a transmission requesting unit (51a) that transmits a transmission request for image data to the receiving device (30) via the communication unit (55) and a display unit (56) that displays the image data received from the receiving device (30) via the communication unit (55) in response to the transmission request. The transmission requesting unit (51a) transmits the transmission request at a request interval (d1) smaller than the imaging interval (D1) when communication with the receiving device (30) is established and transmits the transmission request at a request interval (d2) larger than the request interval (d1) when one or more image data are received.
