A separate operation section (62), which can be disposed separately from an operation section (11) of an endoscope (10), is provided. The separate operation section (62) is provided with a current-state display section (63), a cumulative display section (64), an air feed switch (65), a water feed switch (66), a sub-water feed switch (67) and a suction switch (68). When air feed, water feed and suction are performed by the operation section (11), the air feed amount, water feed amount and suction amount are detected and displayed on the current-state display section (63) and cumulative display section (64) of the separate operation section (62). Thereby, the air feed amount, water feed amount and suction amount can be understood. In addition, by selectively operating the air feed switch (65), water feed switch (66), sub-water feed switch (67) and suction switch (68), a operation control can be performed on the separate operation section (62) side, in place of the air feed, water feed and suction operations of the operation section (11). Thus, the air feed, water feed and suction operations with high precision can simply and easily be realized, and the handling operability can be improved.
