China is facing increasing pressure on international emissions. As the capital of China, Beijing should set an example for carbon emissions. Previous studies on carbon emissions mainly focused on household size and changes in household consumption structure during urbanization. The input-output method is mainly used, but the total output of each department is used to measure the intensity of CO₂ emissions, so that the middle input and added value among the sectors are included, which leads to a large measurement result. Based on the input-output model, the paper chooses the latest input-output table of Beijing in 2012 and calculates the carbon emissions of residents in Beijing in 2012, which calculates the CO₂ emission intensity by using the added value that avoids the problem of double counting. The results show that the total carbon emissions of Beijing residents is 762.948 million tons, of which the direct consumption energy of urban residents is mainly gasoline and heat, while that of rural residents is mainly coal and electricity. Indirect carbon emissions of residential consumption are divided into eight consumption categories. Among them, 57.2% and 18.9% were in transportation and housing, respectively. According to the above conclusions, this paper makes some recommendations.