Abstract: The “Dual-Carbon” target injects green genes in high-quality development in China new era, the key is how to reduce CO2 emission scientifically. Based on theoretical model, the paper explains the original evolution relationship between economic growth and CO2 emission, and deduces the dual influence mechanism of CO2 emission reduction on innovation driving economic growth with "Porter Hypothesis". Empirical research reveals that: with the economic output expansion, the economic contribution of unit CO2 emission has increased, and when the industrial structure in low level, it needs certain CO2 emission tolerance to drive upgrading. Meanwhile, the regulation effect of CO2 emission intensity on innovation driving economic growth has complex nonlinear evolution law. Moderate CO2 emission reduction constraints could pry the optimist extension driving force of technological innovation, and there is marginal decreasing effect with CO2 emission intensity on innovation driving industrial structure. In addition, the threshold adjustment effect of CO2 emission intensity has certain temporal and spatial heterogeneity, the threshold with the highest innovation driving force shows homeopathic transmission trend of high in the East and low in the West in economic output dimensions, and low intensity CO2 emission constraints are generally more conducive to innovation driving and industrial upgrading. Thusly, "Dual-Carbon" promotion should be judged scientifically and step by step, seek the implementation strategy of multi-dimensional balance and dynamic optimization between CO2 reduction squeeze, economic growth and innovation drive.