Network signal enhancement device. The network signal enhancement device is ingenious in conception, low in cost and capable of ensuring signal stability. The circuit comprises a filter circuit, an amplitude limiting amplification circuit and a signal enhancement circuit which are connected in sequence, and the filter circuit is used for filtering a network signal; the amplitude limiting amplification circuit is used for carrying out amplitude limiting output on the filtered network signal; and the signal enhancement circuit is used for improving the transmitting power of the network signal after amplitude limiting output. During work, an input network signal has a certain clutter signal; lC filtering is carried out and then an input terminal of the amplitude-limiting amplification circuitis sent; an operational amplifier U1 in the amplitude limiting amplification circuit receives signals output by the filter circuit, an operational amplifier U2 is connected to a feedback channel of the operational amplifier U1 in parallel to output the signals in an amplitude limiting mode, the signals are sent to the signal enhancement circuit after voltage stabilization to improve the network signal transmitting power, and great development value and practical value are achieved.