An optical fiber cable holding device, comprising: a thin plate portion configured, by bending a rectangular thin plate in a length direction thereof into a shape of a rough circle, to hold an outer periphery of an optical fiber cable ; a binding mechanism portion fixed on one end of the thin plate portion and configured to bind the thin plate portion wound around the optical fiber cable on the one end of the thin plate portion ; protrusion fitting holes provided on the other end of the thin plate portion wound around the optical fiber cable ; and a band-diameter adjuster fixed to the binding mechanism portion , including a band diameter adjuster protrusion fittable into each of the protrusion fitting holes , and configured to adjust a diameter of the rough circle by changing from one hole to another hole of the protrusion fitting holes to be fitted onto the band diameter adjuster protrusion , characterized in that the thin plate portion includes a mechanism to limit pressure, applied from the thin plate portion to the optical fiber cable , to a predetermined value or less, wherein the thin plate portion includes a thin plate elastic body wherein the thin plate elastic body comprises an elastic curved portion , which is curved to protrude toward the optical fiber cable to externally contact with it, wherein the elastic curved portion includes, on a rear surface not contacting with the optical fiber cable , a thin plate elastic body protrusion , wherein the thin plate portion is configured such that, by predetermined pressure occurring between the thin plate elastic body and the optical fiber cable , a curvature of the thin plate elastic body is reduced, the thin plate elastic body protrusion is caused to fit into one of the protrusion fitting holes of the thin plate portion , and the diameter of the rough circle is fixed. a thin plate portion configured, by bending a rectangular thin plate in a length direction thereof into a shape of a rough circle, to hold an outer periphery of an optical fiber cable ; a binding mechanism portion fixed on one end of the thin plate portion and configured to bind the thin plate portion wound around the optical fiber cable on the one end of the thin plate portion ; protrusion fitting holes provided on the other end of the thin plate portion wound around the optical fiber cable ; and a band-diameter adjuster fixed to the binding mechanism portion , including a band diameter adjuster protrusion fittable into each of the protrusion fitting holes , and configured to adjust a diameter of the rough circle by changing from one hole to another hole of the protrusion fitting holes to be fitted onto the band diameter adjuster protrusion , characterized in that the thin plate portion includes a mechanism to limit pressure, applied from the thin plate portion to the optical fiber cable , to a predetermined value or less, wherein the thin plate portion includes a thin plate elastic body wherein the thin plate elastic body comprises an elastic curved portion , which is curved to protrude toward the optical fiber cable to externally contact with it, wherein the elastic curved portion includes, on a rear surface not contacting with the optical fiber cable , a thin plate elastic body protrusion , wherein the thin plate portion is configured such that, by predetermined pressure occurring between the thin plate elastic body and the optical fiber cable , a curvature of the thin plate elastic body is reduced, the thin plate elastic body protrusion is caused to fit into one of the protrusion fitting holes of the thin plate portion , and the diameter of the rough circle is fixed. <EOS>