An elevator assembly to be accommodated in the leading end section of the endoscope includes an assembly body, an elevator, and an elevation lever. The elevator includes an elevator rotation shaft portion, the elevation lever includes a lever rotation shaft portion, and the assembly body includes a bearing hole for supporting the rotation shaft portions and. The elevator rotation shaft portion is inserted into the bearing hole from a recessed portion of the assembly body, and the lever rotation shaft portion is inserted into the bearing hole from a side opposite to the recessed portion, and then the shaft portions are coupled to each other.