This review discusses the application of two-dimensional (2D) materials in enhancing the performance and stability of perovskite solar cells (PSCs). The key roles of 2D materials include acting as interface and electrode materials, improving perovskite growth, energy level alignment, defect passivation, and blocking external stimuli. The unique properties of 2D materials allow them to form van der Waals heterojunctions at the bottom interface, which is crucial for efficient and stable PSCs. The review highlights the advantages of 2D materials, such as their atomic-level thickness, smooth surfaces, and lack of dangling bonds, which minimize interface defects. Additionally, the electronic structure of 2D materials can be tailored to optimize interface barriers and reduce energy loss during carrier extraction and transport. The review also discusses the potential of 2D materials in developing new electrode materials and improving the overall efficiency and stability of PSCs. The key 2D materials discussed include graphene and its derivatives, transition metal dichalcogenides (TMDs), MXenes, and black phosphorus (BP). The review emphasizes the importance of designing high-quality van der Waals heterojunctions, enhancing the uniformity and coverage of 2D nanosheets, and developing new 2D materials-based electrodes for future PSCs. The review concludes that 2D materials offer significant potential for improving the performance and stability of PSCs, and further research is needed to fully realize their potential.This review discusses the application of two-dimensional (2D) materials in enhancing the performance and stability of perovskite solar cells (PSCs). The key roles of 2D materials include acting as interface and electrode materials, improving perovskite growth, energy level alignment, defect passivation, and blocking external stimuli. The unique properties of 2D materials allow them to form van der Waals heterojunctions at the bottom interface, which is crucial for efficient and stable PSCs. The review highlights the advantages of 2D materials, such as their atomic-level thickness, smooth surfaces, and lack of dangling bonds, which minimize interface defects. Additionally, the electronic structure of 2D materials can be tailored to optimize interface barriers and reduce energy loss during carrier extraction and transport. The review also discusses the potential of 2D materials in developing new electrode materials and improving the overall efficiency and stability of PSCs. The key 2D materials discussed include graphene and its derivatives, transition metal dichalcogenides (TMDs), MXenes, and black phosphorus (BP). The review emphasizes the importance of designing high-quality van der Waals heterojunctions, enhancing the uniformity and coverage of 2D nanosheets, and developing new 2D materials-based electrodes for future PSCs. The review concludes that 2D materials offer significant potential for improving the performance and stability of PSCs, and further research is needed to fully realize their potential.