As for endoscope system 1 of this invention, from the direction to which the display 5 which has 1st connector 51 and this display 5 is in common the mount section 15,23,31 which installation and removal unrestrictedly can be installed each the multiple devices being in common to each of 2,3,4 where the function which is provided differs and these mount sections, 15,23,31 distribution facilities it is done, forming opposite in 1st connector 51 of display 5 in a state where display 5 has been installed in mount section 15,23,31, the 2nd connector 52 which is jointed electrically and, it possesses.本発明の内視鏡システム1は、第1のコネクタ51を備えた表示装置5と、この表示装置5が共通する方向から着脱自在に設置できる載置部15,23,31が各々設けられた機能の異なる複数の装置2,3,4と、これら載置部15,23,31の各々に共通して配設され、表示装置5が載置部15,23,31に設置された状態において、表示装置5の第1のコネクタ51に対を成して電気的に接続される第2のコネクタ52と、を具備する。