Plasma catalysis is gathering attentions for its unique characters in chemical reactivity and product selectivity. Various applications have been suggested and demonstrated. When catalysts are located inside the plasma zone, bilateral interactions occur which are generally complicated to get full understanding of the detailed steps. Nevertheless, a lot of experimental results have been filed up for various chemical reactions (decomposition, synthesis, partial redox). Notwithstanding the progress during the last decades, however, the understanding of the working mechanism is still in early stage. As a representative model reaction, room temperature oxidation of CO was compared for the conventional thermal catalysis, plasma-driven catalysis, and ozone-assisted catalysis. The effect of different catalyst, reaction mechanism, and catalyst regeneration was discussed. In this review, the current progress to understand the bilateral interactions of plasma and catalyst, literature survey, and some of future perspective will be presented.