The invention discloses an optical-waveguide sealed cabin-penetrating socket. The optical-waveguide sealed cabin-penetrating socket comprises a shell, a sleeve assembly, a light guide bar and a screw.The shell comprises a separation wall and a step hole, the sleeve assembly comprises a ceramic sleeve and a metal sleeve, the light guide bar is arranged in the step hole of the separation wall in the middle of the shell, the sleeve assembly is arranged on two sides of the separation wall of the shell, and two ends of the light guide bar are connected with the ceramic sleeve of the sleeve assembly in a socket mode. A fibreless light path welding and sealing technology is created, light path sealing is realized through welding of the light guide bar and the metal shell, precise centering of the ceramic sleeve is adopted, signal transmission of a light path is guaranteed, and the technical problem of unreliability in bare fiber welding is solved. The optical-waveguide sealed cabin-penetrating socket has the advantages of simplicity in process, reliability in sealing, good environment resistance performance and high anti-contamination capability.