The present invention discloses an anti-near line interference overhead distribution line zero sequence current waveform acquisition device which solves the problem that a conventional overhead distribution line zero sequence current waveform acquisition device is electromagnetically interfered by the near lines easily. The anti-near line interference overhead distribution line zero sequence current waveform acquisition device is characterized in that a signal processor support (7) is arranged on a cross arm (2) of an overhead distribution line tower (1), a signal processor (5) is arranged onthe signal processor support (7), is connected together with the signal acquisition devices (4) on the overhead conducting wires (3) via the coaxial cables (6) and inputs the voltage signals acquiredby the three signal acquisition devices (4) and representing the three-phase current waveforms of the overhead distribution lines in the respective signal conditioning circuits, and the signals are inputted to an added circuit to carry out the add operation after being conditioned, namely, a signal representing a zero sequence current waveform is outputted, and i0=iA+iB+iC. According to the present invention, the more accurate zero sequence current waveform can be acquired, and the single-phase grounding of the power transmission conducting wire is determined accurately.