Underground connector casing for signal cable

The utility model discloses an underground connector casing for a signal cable, which comprises a cable and a main sleeve tube. The connecting of the cable is arranged in the main sleeve tube; the outer side of both ends of the main sleeve tube are fixedly connected with auxiliary sleeve tubes; the inner side of the both ends of the main sleeve tube are hermetically fixed with sealing sleeves; each sealing sleeve is provided with two sealing surfaces, and each sealing surface is provided with a separate fastener for fastening; one sealing surface of each sealing sleeve is sealed and connected with the main sleeve tube, and the other sealing surface of each sealing sleeve is sealed and connected with the cable; cable fixing disks and cable fixing racks are arranged inside the auxiliary sleeve tubes; the cable fixing disks are fixed on the main sleeve tube; the cable fixing racks are arranged on the cable fixing disks; the cable is fixed on each cable fixing rack; the outer sides of the auxiliary sleeve tubes which are arrangd on the both ends are connected with sealing joints; sealing filling glue is filled in the main sleeve tube and the auxiliary sleeve tubes. The underground connector casing for a signal cable has the advantages of high sealing performance, short construction time and convenient use.