To provide a tip hood of an endoscope, wherein a tip loop electrode part of a high-frequency snare is widely spread so that a cutting range can be sufficiently secured, and which can improve the property of making the high-frequency snare snipe a target region.

This tip hood of the endoscope is detachably attached to a tip body 1 in the state of almost cylindrically protruding forward from a tip surface 1a of the tip body 1 of an endoscope insertion part wherein an observation window 2 and a treatment instrument protruding port 3 are arranged in a juxtaposed manner. In the tip hood, a treatment instrument guiding part 12, which guides a treatment instrument 50, fitted into the port 3 from before so as to be protruded from the port 3, in such a manner that an angle is deflected in the direction of getting away from the observation window 2, is integrally formed.