Coal to gas, as a "high energy consumption, high pollution, high water consumption" coal conversion and utilization product, has been restricted and contained until 2011; however, in just three years, the national policy has shifted from the initial restrictions to promoting demonstration projects. In 2014, the energy guidance proposed to actively promote the industrialization of coal to gas, and proposed the goal of reaching 50 billion cubic meters by 2020. However, in terms of technology maturity, economic uncertainty, environment and external cost of climate change, there are still many obstacles in the development of coal to gas industrialization in order to achieve this output goal. We believe that at this stage, we should strengthen the demonstration of coal to gas technology and test whether the technology is mature from multiple perspectives; before the demonstration project practice proves that the new technology breakthrough, the competitiveness of coal to gas is very weak, so it should not be regarded as the industrial scale development.