Blood Mila is a new kind of amber that has appeared on the market since last year, which has uncommon color and unique root-like inclusions (known as root-like patterns). There has been no definite conclusion about the genesis of such root-like inclusions so far. The root-like inclusions are extremely similar in morphology to the Lichtenberg figures in which the insulator initiates the generation of breakdown discharges through irradiation by electron beam technology. As insulators, whether amber and copal can generate Lichtenberg figures by the electron beam irradiation technology has not been reported yet. Therefore, the authors collected some amber and copal samples to perform electron beam irradiation test. The results show that the root-like inclusions can be generated in both amber and copal samples by the electron beam irradiation technology under appropriate process conditions. The root-like inclusions generated by irradiation are the dendritic channels with stress-related cracks generated by breakdown discharge in amber and copal samples, also named Lichtenberg figures. The root-like inclusions generated in tested samples by irradiation are almost the same in morphology as those in Blood Mila samples.