10 Gb/s transponder with electronic dispersion compensation (EDC) is designed and fabricated. Inter-symbol-interference brought about by chromatic dispersion and polarization mode dispersion is minimized by electronic dispersion compensation. So the transmission distance is greatly enhanced .Apart from electronic dispersion compensation, the transponder fabricated features DFB+EA integrated light source and avalanche photodiode (APD) module carrying transimpedance amplifier. Experiments and tests show that the sensitivity of back-to-back transmission is -24.6 dBm, and the transmission distance of the module is more than 100 km, the sensitivity is -20.8 dBm after transmission of 100 km G.652 fiber. Compared with transponder without electronic dispersion compensation, which has a transmission distance of about 50 km, the transmission distance is doubled. Hence the requirement of dispersion management of the system is cut down greatly and cost reduced.