Endoscopic fluid control apparatus (30), provided (10) an endoscope having a single conduit that performs air and the suction (25, 28) for air (25, 28) the conduit I controls the suction and. Endoscope fluid control device (30), an air duct leading conduit of the one in (25, 28) and (39,81,84,85,88,91,82), conduit of said one ( The provided suction line leading to the 25, 28) and (38), duct is placed above (39,81,84,85,88,91,82), a first valve that opens only when air (95) and, when arranged in (74) the operation button for the suction operation, has been operated (74) the operation button, duct is placed to the inserted (74) the operation button (81,84,85,88 , in 91,82), and has a second valve that shuts off the communication between the (82) On the other hand of the duct and (105) put the (81) and one of the duct to put the.内視鏡用流体制御装置（３０）は、吸引と送気を行う一つの管路（２５、２８）を有する内視鏡（１０）に設けられ、前記管路（２５、２８）に対する送気と吸引の制御を行う。内視鏡用流体制御装置（３０）は、前記一つの管路（２５、２８）に通じる送気管路（３９、８１、８４、８５、８８、９１、８２）と、前記一つの管路（２５、２８）に通じる吸引管路（３８）と、前記送気管路（３９、８１、８４、８５、８８、９１、８２）に設けられ、送気時のみに開く第１の弁（９５）と、吸引動作を行う操作ボタン（７４）に配設され、前記操作ボタン（７４）が操作された際に、前記操作ボタン（７４）を挿通する前記送気管路（８１、８４、８５、８８、９１、８２）において、前記送気管路の一方（８１）と前記送気管路の他方（８２）との連通を遮断する第２の弁（１０５）とを有する。
