The invention discloses a data voice splitter suitable for distributed use, which comprises a line incoming end, a voice interface and a network interface, a low-pass filter is connected between the line incoming end and the voice interface and comprises LRC circuits connected in series among lines and filter capacitors connected in parallel among lines, the low-pass filter is further provided with a detection circuit and a switch circuit, the detection circuit detects current magnitude of a signal transmission loop and controls the switch circuit according to the current magnitude, on/off state of the switch circuit regulates the capacitance of the filter capacitors. On the one hand, the invention ensures that normal DSL service and signal quality of the terminal to which the voice interface is connected are not influenced, on the other hand, compared with the prior art, the invention can offer a plurality of voice terminals for the use in parallel connection and is particularly suitable for distributed application of a plurality of voice terminals.