About 40 billion tons of carbon dioxide (CO2) per year are being emitted due to industrial revolution human activities. The high concentration of CO2 in the atmosphere increases greenhouse gases, which potentially harms the ecosystem by increasing the global temperature. As CO2 is the major component of greenhouse gases, its mitigation is a hot concern among the scientific society. Therefore, different techniques like CO2 storage and sequestration and CO2 utilization/conversion are being investigated to fix CO2. Among these techniques, CO2 conversion is better strategy which maybe a way of transforming waste into wealth. Compared with other conversion techniques, electrochemical reduction of CO2 (ERC) is more attractive technology because it takes place at ambient conditions and it is green technology to convert CO2 into useful chemical commodities. The hydrogen and electrical energy required can be derived by using solar, wind or any other renewable energy. Owing to ILs inherent attractive properties as solvents for greenhouse gases and as electrolytes due to their safer and more stable behavior than many traditional solvents and electrolytes. The ILs in ERC are playing efficient role in modulating the CO2 electroreduction process as co-catalyst and/or reaction medium, by decreasing activation energy, altering reaction pathway, and selectively stabilizing reaction intermediates. Thus, in this review, few research aspects about ERC using ILs as electrolyte are summarized which include, significance of ILs, electrode materials and role ERC in purging acidic gases from industrial processes. This study is aimed to carry out more fundamental research accordingly and to understand the physical, chemical, and thermodynamic characteristics of complex RTIL-based electrocatalytic systems.