Abstract: How to effectively play regional low-carbon emission reduction from the industrial policy level is a topic worthy of attention. What is the effect of green industrial policy as an important institutional driver to promote low-carbon transformation and upgrading on regional low-carbon emission reduction effect? What is the impact of the emotional signals released by the policy text on low-carbon emission reduction? Based on the content of green industrial policies introduced by the central government and the Yangtze River Delta region, this paper examinethe affective preferences of green industrial policies from 2010-2019, and systematically examine the low-carbon emission reduction effects of green industrial policies. that green industrial policies mostly designed based on welfare-oriented preferences The PMC model showthat the internal consistency of local green industrial policies s high and the scores he internal consistency of central green industrial policies s and the scores balanced. These findings suggest that the rational design of green industrial policy content s conducive to the promotion of low-carbon emission reduction effects, which in turn promote regional low-carbon emission reduction levels.