To provide an operation button device and an electronic endoscope of an electronic endoscope capable of withdrawing an operation button (pressing operation button) and preventing malfunction caused thereby.An operation button device provided on an outer shell portion of an electronic endoscope includes a pressing operation button capable of applying a pressing force in a longitudinal direction, a lateral direction and an oblique direction with respect to the outer shell portion, And an interlocking pushing member for pushing the electric switch in conjunction with the pushing operation force applied to the pushing operation button, wherein the pushing operation button has a fitting shaft portion extending toward the electric switch, Wherein the interlocking pushing member has a fitting hole portion into which the fitting shaft portion of the pushing operation button is fitted.(FIG.【課題】操作ボタン(押圧操作ボタン)の離脱とこれに起因する作動不良を防止することができる電子内視鏡の操作ボタン装置及び電子内視鏡を提供する。【解決手段】電子内視鏡の外殻部に設けられる操作ボタン装置であって、前記外殻部に対する縦方向と横方向と斜め方向の押圧操作力を加えることが可能な押圧操作ボタンと、前記押圧操作ボタンに加えられた前記押圧操作力に連動して電気スイッチを押し込む連動押込部材と、を有し、前記押圧操作ボタンは、前記電気スイッチに向かって延びる嵌合軸部を有し、前記連動押込部材は、前記押圧操作ボタンの前記嵌合軸部が嵌合される嵌合孔部を有する、ことを特徴とする電子内視鏡の操作ボタン装置。【選択図】図4