This article aims to explore the carbon sequestration capacity in land remediation projects and study how to effectively increase soil and biological carbon sequestration through these projects to address the challenges of global climate change. It introduces the basic concept of carbon sequestration and its influencing factors, with particular attention to the impact of key factors such as soil quality and water resource management on carbon sequestration capacity. It assesses the potential of soil carbon sequestration in land remediation projects and emphasizes the significance of rational land use planning in enhancing carbon sequestration capacity. The strategies and measures to enhance carbon sequestration capacity in land remediation projects are discussed, including ecological engineering construction, wetland conservation and restoration, soil quality improvement, promotion of organic agriculture, soil conservation, and carbon incentive policies and social participation. By promoting the simultaneous development of carbon neutrality and ecological protection, the article aims to achieve a win-win situation for the economy and the environment, and drive sustainable rural development.