Cable branching service entrance joint box

The utility model relates to an optical cable branch service entrance joint box, which is suitable for leading optical fibers into a room. The utility model comprises a box body, both sides of the box body are provided with optical cable inlets and outlets and cable fixing devices, and an optical fiber ribbon fan-out tail fiber receptacle is arranged in the box body. The optical fiber ribbon fan-out tail fiber receptacle comprises an optical fiber ribbon receptacle and a tail fiber receptacle. The utility model has the advantages that the optical cable branch service entrance joint box is especially suitable for carrying out branching and fiber laying for leading optical fibers into a room to a skeleton-type optical fiber ribbon optical cable, and cable fixing and fibers division are very convenient; the skeleton-type optical fiber ribbon optical cable is adopted, the branching point of the optical cable is provided with a branching window, optical fiber ribbons are separated and switched into tail fibers from the branching window and enter into a room, and the method for laying cables and fibers can reach the purposes of little consumption of cables, easy branching of the optical cable and easy construction; the utility model also has the advantages of simple structure and convenient installation and use, the laying cost for leading optical fibers into a room can be reduced and the utility model is favorable for the implementation and popularization for leading optical fibers into a room.