A lens forward direction marking structure of endoscope mainly comprises: an imaging lens group for capturing an image a shapable flexible tube, one front end of which is fixedly arranged at the imaging lens group a rigid tube, one front end of which is fixedly provided at the rear end of the shapable flexible tube and a grip, one front end of which is fixedly arranged at rear end of the rigid tube when the imaging lens group, the shapable flexible tube, the rigid tube and the grip are rotated, the rotation angles of them are consistent. At least one of the imaging lens group, the shapable flexible tube, the rigid tube and the grip is provided with a marker, so that when the rigid tube is placed horizontally, the marker will be located above at least one of the imaging lens group, the shapable flexible tube, the rigid tube and the grip, for corresponding to the upper side of an image captured by the imaging lens group. Accordingly, when the marker is positioned above at least one of the imaging lens group, the shapable flexible tube, the rigid tube and the grip, it will correspond to the upper side of an image captured by the imaging lens group that is, the imaging lens group is always operated in the forward direction so as to facilitate the effectiveness of easy operation.一種內視鏡之鏡頭正向標示結構,主要包含有:一攝像鏡頭組,用以擷取影像;一可定型撓性管,前端固設該攝像鏡頭組;一硬管,前端固設該可定型撓性管之後端;以及一握把,前端固設該硬管之後端;其中,該攝像鏡頭組、該可定型撓性管、該硬管及該握把於轉動時,旋轉角度為一致,於該攝像鏡頭組、該可定型撓性管、該硬管或握把至少其中之一設置有一標示件,該硬管水平置放時,該標示件位於該攝像鏡頭組、該可定型撓性管、該硬管或是該握把至少其中之一的上方,對應該攝像鏡頭組攝影之影像上方。藉此,當該標示件位於該攝像鏡頭組、該可定型撓性管、該硬管或是該握把至少其中之一的上方,則對應該攝像鏡頭組攝影之影像上方,亦即該攝像鏡頭組為正向攝影,以達便於操作之之功效。100‧‧‧內視鏡之鏡頭正向標示結構21‧‧‧攝像鏡頭組31‧‧‧可定型撓性管41‧‧‧硬管42‧‧‧標示件51‧‧‧握把
