Carbon emission control in industrial parks is one of the important means to achieve the low-carbon construction and development of cities. To achieve carbon emission control in industrial parks, the composition and calculation methods of carbon emissions in the parks need to be clarified. The paper starts from the calculation scope and boundaries, considering the coverage of energy activities in the park in terms of buildings, transportation, municipal lighting, water resources, solid waste, etc., carbon emission calculation models for various types of energy activities are established. At the same time, under the situation of the park adopting renewable energy and carbon sink measures, the calculation methods of carbon reduction amounts of photovoltaic power generation and greening carbon sink are studied, and the carbon reduction model within the park is established. Based on the above research content, an overall carbon emission calculation model for the park under carbon reduction measures has been developed. The model construction and case practice have been implemented through the PKPM-CC dual carbon cloud service platform, providing reference for carbon emission calculation and reduction measures in other parks in the future.