CH4eCO2 reforming is of rapid growing interest for reasons of the continuous decrease of petroleum
resources and the emphasis on the environmental situation for greenhouse gas mitigation. Plasma
technology is considered to be one of potential ways for CH4eCO2 reforming. This paper presents an
overview of CH4eCO2 reforming by cold plasmas and thermal plasma. The evaluations for their
performances and the key factors in different plasmas are given. In particular, the attention is focused on
how to achieve higher conversions at high feed-gas flow rate, so as to lessen the energy consumption in
the process by plasma to meet the requirements of industrial application. To obtain the aim, three key
factors, electron density, plasma temperature and reactor configuration related to the process are
emphasized. Considering the current status of CH4eCO2 reforming by plasma, there is an opportunity to
improve the energy conversion efficiency and the treatment capacity of the process by optimizing both
plasma form and reactor design in future work.