Civil nuclear technology has been widely used in agriculture, industry, public safety, public health, environmental protection and other fields. As an emerging strategic industry, it has guided the direction for promoting the transformation and upgrading of traditional industries, leading to a new pole of economic growth and promoting the green development of industries. From the point of view of the carbon footprint, this study calculated the carbon emission of the civil nuclear technology application industry according to the basic accounting content of life cycle analysis (LCA). The minima, maxima and means of the carbon emission status of China (excluding Tibet, Hong Kong, Macao, and Taiwan) from 2000 to 2019 were calculated using SPSS Software, and the carbon dioxide emissions were calculated by the Min-Max normalization method. We then compared the carbon emissions of each type of energy consumed by the civil nuclear industry with the carbon emissions of each of the carbon emission status of China. This comparison showed that the total emission of the civil nuclear technology application industry is small over its whole life cycle, but its output value is relatively large, so it is an environmentally-friendly industry which conforms to the trend of low-carbon development, clean production and green development. These features are in line with the requirements of economic development, so it is conducive to promoting the achievement of carbon peak carbon neutrality. In view of this, in order to further promote the development of the civil nuclear technology application industry, all departments should have a unified understanding, set up a special working coordination mechanism, actively seek the relevant policy support from their superiors, give full play to their own advantages and conduct regular inspections. In addition, we will put in place systems and policies to attract more and better projects, increase the number and improve the quality of projects, promote the “Inner Circle” development of the civil nuclear technology application industry, and expand overseas markets, in order to create an “Outer circulation” highland.