This article presents the induced overvoltage caused by nearby artificial-triggered lightning at different observation points on 10 kV distribution lines in the Conghua area of Guangzhou during the summer of 2018. The induced overvoltage waveforms measured at different observation points on the transmission lines feature obvious distribution regularity. Three-phase overvoltage has similar waveform characteristics, the induced overvoltage of each observation point starts from the slow rise of negative polarity, which can reach a negative peak after tens of microseconds, then polarity reversal occurs within 2–10 μ s, and bipolar periodic attenuation oscillation begins after reaching the positive peak, and finally falls to 0 level. According to the characteristics of the waveform, the induced overvoltage waveform can be divided into three parts: the negative peak rising process, the polarity conversion process, and the attenuation oscillation process. With the increase of the distance from the observation point to the lightning channel, the negative peak value increases gradually, and the increase slows down near the end of the line; the time of polarity conversion increases gradually, and the peak-to-peak value decreases gradually, but there is a recovery to some overvoltage at both ends of the line. The attenuation oscillation at different observation points lasts for a period of about 16 μ s, which is independent of the location of the observation points. However, the farther away from the trigger point, the longer the oscillation lasts.