To provide a counter case mounting structure capable of downsizing the height of a counter case. When a counter case (4) is mounted to a coupling member (7c) on the top of a reel body (1), with the counter case (4) supported on the coupling member (7c) that is located on the top, two bolt members (70) penetrates from the upper side of two protrusion sections (4b) of the counter case (4) through two through holes (4c), so that by having the male threading sections (70b) of the two bolt members (70) threadingly engaged with two female threading sections (7f) formed in two hubs (7e) projecting toward the top of the coupling member (7c), the counter case (4) is fixed to the coupling member (7c) that is located on the top.
