An endoscope includes an insertion portion, a flexible member, a connecting member the proximal end side portion of which is fixed to the distal end side of the flexible member, an outer sheath that is caused to cover the outer circumference of the flexible member, a first filling agent that is applied on the outer circumference side of the flexible member in such a manner as to come into contact with at least the distal end side of the outer sheath, an annular member that covers at least the outer circumference of the first filling agent, and a second filling agent that is applied so as to continuously cover at least the outer circumference of the annular member and the outer circumference on the distal end side of the outer sheath.