A method for manufacturing an optical fiber , the method comprising: a step of exposing a glass fiber by stripping a fiber coating layer at an end portion, on a splicing side, of each of a pair of optical fibers; a step of fusion-splicing end surfaces of the glass fibers ; and a step of recoating a protective resin on a periphery of exposed portions of the glass fibers , wherein the fiber coating layer includes a primary resin layer on an inner peripheral side and a secondary resin layer on an outer peripheral side and having a Young's modulus of 800 MPa or greater, and wherein the step of recoating is a step of coating the protective resin to include a coating edge, characterized in that : the primary resin layer has a Young's modulus of 0.5 MPa or less, the step of exposing is a step of forming a shape of the coating edge of the fiber coating layer which includes the primary resin layer and the secondary resin layer into a tapered shape which becomes narrower toward the end portion side, the method further comprising a step of irradiating a portion of the fiber coating layer to be stripped with ultraviolet rays to increase the Young's modulus of the primary resin layer , prior to the step of exposing, and wherein the step of exposing is a step of forming the coating edge of the fiber coating layer into the tapered shape. a step of exposing a glass fiber by stripping a fiber coating layer at an end portion, on a splicing side, of each of a pair of optical fibers; a step of fusion-splicing end surfaces of the glass fibers ; and a step of recoating a protective resin on a periphery of exposed portions of the glass fibers , wherein the fiber coating layer includes a primary resin layer on an inner peripheral side and a secondary resin layer on an outer peripheral side and having a Young's modulus of 800 MPa or greater, and wherein the step of recoating is a step of coating the protective resin to include a coating edge, characterized in that : the primary resin layer has a Young's modulus of 0.5 MPa or less, the step of exposing is a step of forming a shape of the coating edge of the fiber coating layer which includes the primary resin layer and the secondary resin layer into a tapered shape which becomes narrower toward the end portion side, the method further comprising a step of irradiating a portion of the fiber coating layer to be stripped with ultraviolet rays to increase the Young's modulus of the primary resin layer , prior to the step of exposing, and wherein the step of exposing is a step of forming the coating edge of the fiber coating layer into the tapered shape. the primary resin layer has a Young's modulus of 0.5 MPa or less, the step of exposing is a step of forming a shape of the coating edge of the fiber coating layer which includes the primary resin layer and the secondary resin layer into a tapered shape which becomes narrower toward the end portion side, the method further comprising a step of irradiating a portion of the fiber coating layer to be stripped with ultraviolet rays to increase the Young's modulus of the primary resin layer , prior to the step of exposing, and wherein the step of exposing is a step of forming the coating edge of the fiber coating layer into the tapered shape. <EOS>