Crystalline silicon based solar cells have dominated the photovoltaic market for decades owing to their high efficiency, material abundance, and long-term reliability. The certified power conversion efficiencies (PCEs) of front-back-contacted and interdigitated-back-contacted (IBC) silicon solar cells have reached up to 26.8% and 27.1%, respectively, which were recently achieved by LONGi company on commercial silicon wafers. To further push the efficiency to a new height, perovskite/silicon tandem has attracted a great attention. However, there are still many key issues that need to be resolved to meet the requirements of industrialization in the future. In this talk, I will first introduce several potential methods to achieve high efficient tandem solar cell and show their strengths and weaknesses. Second, I will highlight the main works we have done over the past year on the world-record perovskite/silicon tandem, demonstrating some key strategies to improve the efficiency, including morphology control, additive engineering, and interface engineering. I will discuss the main challenges facing perovskite/silicon tandem, including the stability issues, process reproducibility, manufacturing cost, and some scale-up issues.