A wired optical communication assembly includes an optical transmission connector and a cable assembly having a casing, at least one optical waveguide, a first cable and a second cable. The casing has a storage space, a first through hole and a second through hole located at two sides of the casing. The optical waveguide is disposed in the storage space and has a first end and a second end. One end of the first cable is connected to the optical transmission connector, and another end of the first cable penetrates through the first through hole of the casing and is connected to the first end. One end of the second cable penetrates through the second through hole of the casing and is connected to the second end, and another end of the second cable is configured to be coupled to another optical communication module.