A direction-changing structure of an endoscope is insertedly disposed on a cable and is connected to an image-taking device. The image-taking device changes direction along with the direction-changing structure. The direction-changing structure comprises a head end connector, a tail end connector, a plurality of joint rings, and a plurality of slidable components. The joint rings are parallelly arranged in a spaced manner between the head end connector and the tail end connector. Each slidable component comprises a support pillar and a slidable pillar. The support pillar has a slide groove and the slidable pillar has a convex arc surface. The slide groove of the support pillar is used for receiving the convex arc surface of the slidable pillar. At least two slidable components are arranged between every two joint rings and two ends of each slidable component are respectively abutted against the two joint rings.一種內視鏡的轉向結構,其係穿設於一纜線上,且連接一取像裝置,該取像裝置係隨該轉向結構轉向。該轉向結構包括一頭端連接件、一尾端連接件、多個關節環及多個滑動組件。該些關節環係間隔並排於該頭端連接件及該尾端連接件之間。每一滑動組件具有一支撐柱及一滑柱,該支撐柱具有一滑槽,該滑柱具有一凸弧面,該支撐柱的滑槽用以接收該滑柱的凸弧面。其中,每兩關節環之間設置至少兩滑動組件,每一滑動組件的兩終端係分別抵頂於該兩關節環上。10‧‧‧轉向結構11‧‧‧取像裝置12‧‧‧纜線
