The invention relates to a network cable connector, in particular to a network cable splitter. The network cable splitter comprises a device body; the network cable tapping device is characterized in that one network cable main interface is arranged at one end of the device body and a network cable sub-interface is arranged at the other end; and the network cable sub-interface is provided with a main sub-interface and a secondary sub-interface. The network cable tapping device with the structure has the advantages of being simple in structure and convenient to use, and simultaneous Internet surfing of two computers or simultaneous use of one computer and two telephones can be achieved.