Forests play a crucial role in carbon sequestration. A comprehensive carbon sequestration model can accurately assess the amount of carbon sequestration in forests, which can determine how to plan forests to achieve maximum carbon sequestration benefits. However, traditional carbon sequestration models only focus on the carbon sequestration of trees themselves and forest products. This article innovates and modifies the traditional model by including more indicators, such as the carbon sequestration of new growth and the carbon emissions caused by the residual material from logging. All factors that affect carbon sequestration are classified and unified in a reasonable way, resulting in a more excellent and comprehensive carbon sequestration model. Finally, this article validates and discusses the model, which shows that the model is consistent with actual results, has accuracy and predictability, and has practical value.