A cleaning structure for endoscope lens includes a sleeve main body having a fitting hole, at least one first axial fluid passage and a first opening. The fitting hole communicates with two ends of the sleeve main body. The first axial fluid passage is axially formed in a wall of the sleeve main body. The first opening is formed at one end of the sleeve main body in communication with the first axial fluid passage. The sleeve main body is fitted around the lens of the endoscope. A fluid is supplied to the fluid passage structure of the sleeve main body and ejected from the opening to clean up the surface of the lens of the endoscope so as to keep the surface of the lens clean.一種內視鏡鏡頭清潔結構,係包含:一外套本體具有一套接孔及至少一第一軸向流體通道及一第一通孔,該套接孔連通該外套本體兩端,該第一軸向流體通道軸向設置於該外套本體之內壁中,該第一通孔設置於該外套本體之一端並與該第一軸向流體通道相連通,透過將該外套本體套設於該內視鏡鏡頭外部,並由該外套本體所設置之通道結構通以流體對該內視鏡鏡頭進行表面清潔,藉以保持鏡頭表面清晰者。1‧‧‧外套本體11‧‧‧套接孔111‧‧‧第一端112‧‧‧第二端12‧‧‧第一軸向流體通道13‧‧‧第一通孔2‧‧‧內視鏡之鏡頭3‧‧‧流體
