As the rate of data transmission continues to increasethe data loss caused by the channel becomes more and more serious.Using the traditional Continuous-Time Linear Equalizer (CTLE) to equalize and compensate for the signal can no longer offset the serious signal attenuation caused by the channel.In order to better compensate for the attenuationthe traditional CTLE equalizer is further improvedand a new CTLE based on negative capacitance is proposed.On the basis of the traditional CTLEtwo cross-connected MOS transistors are used to form a negative capacitorwhich is superimposed on the output of the traditional first-level CTLE to form a second-level structure,which can increase high-frequency gain and achieve greater bandwidthso as to provide better compensation for channel attenuation.The simulation results show that at a data rate of 25 Gibit/sthe equalizer with a negative capacitance has good compensation capability.After equalizationthe horizontal opening of the eye diagram reaches 0.9 Unit Interval (UI).The new CTLE based on negative capacitance is helpful for improving the overall data transmission rate.