China has formally put forward the “30·60” strategy in September 2020，that is，to reach the peak of carbon dioxide emissions before 2030，and strive to achieve carbon neutrality by 2060. As the main battlefield of this strategy，cities bear important carbon reduction and control responsibilities. For Beijing，as the capital，how to achieve green and sustainable development under the background of “dual carbon” is an important issue. Based on this “30·60” strategy，this article introduces the carbon emission reduction experience of foreign cities，and quantitatively analyzes the current situation of energy consumption and emissions in Beijing. At the end of the study，four-level implementation path recommendations of government，market，intelligence and citizens are given.