The present invention protects the incident portion of the light guide body from the heat generation of the semiconductor light source without lowering the light distribution efficiency. Light guide (11) of the vehicular lamp has a light guide (12) that guides light generated by the semiconductor light source (3). The light guide body (12) includes an incident portion (13) that injects light fromthe semiconductor light source (3), and a protection portion (16) that protects the incident portion (13) in order not to be affected by heat impact of the semiconductor light source (3). The incidentportion (13) is molded from a first transparent material, and the protective portion (16) is molded from a second transparent material having a softening point higher than that of the first transparent material. Acrylic or polycarbonate resin is used for the first transparent material, and glass is used for the second transparent material. Alternatively, an acrylic resin is used for the first transparent material, and a polycarbonate resin is used for the second transparent material.