With the wide application of the power electronic equipment in the oilfield electric distribution network, the waveform distortion of the grid becomes increasingly serious and damaging to the normal operation of the electrical equipment and the power system reliability. Based on the characteristics of the oilfield electric distribution network and the basic theory of the harmonic analysis, this paper gives a brief introduction to the causes and damages of harmonic waves in the oilfield electric distribution system, the harmonic control method and the filtering techniques are compared, and the development process of the Harmonic Dynamic Suppression technology using the active filter in the oilfield electric distribution system is discussed. Finally, the prospect of the development of the Harmonic Dynamic Suppression in the oilfield electric distribution system is commented.