An endoscope includes: an insertion section configured to be inserted into a subject a bending section disposed on a distal end side of the insertion section and bendable in at least one direction a distal end member connected to a distal end side of the bending section and having a passage to allow a treatment tool to project from the distal end member a tube inserted into the bending section to allow the treatment tool to be inserted into the tube and having a recessed portion on an inner surface of a distal end side of the tube and a connection section having a central axis and having one end fixed to the distal end member to be communicated with the passage, and having a projecting portion at the other end of the connection section, projecting along the central axis so as to be fitted into the recessed portion.
