CO2 as a classical C1 unit is often used in the synthesis of high value-added carboxylic acids and their derivatives in organic synthetic chemistry. There have been many reports in the past on electrochemically mediated chemical transformations utilizing electrons as redox reagents. This review will focus on electrocarboxylation methods in the recent 5 years, including metal-mediated electrocarboxylation, direct electrocarboxylation, and some novel electrocarboxylation methods.