The purpose of the present invention is to provide a capsule endoscope system which, without increasing the complexity of a configuration of a capsule endoscope, is capable of appropriately controlling an image capture frame rate depending upon an observation site. Provided is a capsule endoscope system, comprising: a capsule endoscope 10 which captures images of the interior of a subject, generates image signals, and transmits wireless signals which include the image signals receiving antennae groups 20, 30 which are attached to the surface of the body of the subject, and which receive the wireless signals and a receiving device 40 which, by taking in electrical signals which correspond to the wireless signals via the receiving antennae groups and carrying out signal processing, acquires the image signals. The receiving device 40 compares a first receiving strength in an esophageal antenna 20b and a second receiving strength in an abdominal antenna 30d, generates instruction signals which change the image capture frame rates in the capsule endoscope 10 on the basis of the result of the comparison, and wirelessly transmits the same. The capsule endoscope 10 changes the image capture frame rates in accordance with the instruction signals which are wirelessly transmitted from the receiving device 40.La présente invention vise à fournir un système dendoscope à capsule qui, sans augmenter la complexité dune configuration dun endoscope à capsule, est apte à commander de façon appropriée une durée dimage de capture dimage en fonction dun site dobservation. À cet effet, linvention concerne un système dendoscope à capsule, comportant: un endoscope à capsule (10) qui capture des images de lintérieur dun sujet, génère des signaux dimage, et transmet des signaux sans fil qui comprennent les signaux dimage des groupes dantennes de réception(20, 30) qui sont fixés à la surface du corps du sujet, et qui reçoivent les signaux sans fil et un dispositif de réception (40) qui, par la
