This review focuses on the engineering design principles and experimental strategies to enhance interfacial contact between solid-state electrolytes (SSEs) and electrodes (lithium anodes and sulfur cathodes) in solid-state lithium-sulfur (Li–S) batteries. The high interfacial impedance between SSEs and electrodes hinders charge transfer and leads to uneven lithium deposition, resulting in insufficient capacity utilization and poor cycling stability. The review highlights the importance of reducing interfacial resistance and discusses the challenges and future perspectives of rational interfacial strategies. Key strategies for enhancing interfacial contact include mechanical pressing, vapor deposition, molten lithium treatment, polymer modification, slurry casting, and in situ polymerization. Mechanical pressing is effective for achieving intimate contact between SSEs and lithium anodes, but it can cause mechanical induced short circuits. Vapor deposition techniques, such as physical vapor deposition (PVD) and chemical vapor deposition (CVD), can deposit thin films to improve wettability and reduce interfacial resistance. Molten lithium treatment involves spreading molten lithium onto SSEs to form an ultrathin lithium anode, but it requires pre-treatment to improve wettability. Polymer modification using flexible polymers can enhance wettability and reduce interfacial resistance. For sulfur cathodes, mechanical pressing is also crucial to reduce interfacial impedance and establish smooth Li-ion transport pathways. The review emphasizes the importance of optimizing interfacial contact to ensure unimpeded conductive pathways and achieve superior electrochemical performance in solid-state Li–S batteries.This review focuses on the engineering design principles and experimental strategies to enhance interfacial contact between solid-state electrolytes (SSEs) and electrodes (lithium anodes and sulfur cathodes) in solid-state lithium-sulfur (Li–S) batteries. The high interfacial impedance between SSEs and electrodes hinders charge transfer and leads to uneven lithium deposition, resulting in insufficient capacity utilization and poor cycling stability. The review highlights the importance of reducing interfacial resistance and discusses the challenges and future perspectives of rational interfacial strategies. Key strategies for enhancing interfacial contact include mechanical pressing, vapor deposition, molten lithium treatment, polymer modification, slurry casting, and in situ polymerization. Mechanical pressing is effective for achieving intimate contact between SSEs and lithium anodes, but it can cause mechanical induced short circuits. Vapor deposition techniques, such as physical vapor deposition (PVD) and chemical vapor deposition (CVD), can deposit thin films to improve wettability and reduce interfacial resistance. Molten lithium treatment involves spreading molten lithium onto SSEs to form an ultrathin lithium anode, but it requires pre-treatment to improve wettability. Polymer modification using flexible polymers can enhance wettability and reduce interfacial resistance. For sulfur cathodes, mechanical pressing is also crucial to reduce interfacial impedance and establish smooth Li-ion transport pathways. The review emphasizes the importance of optimizing interfacial contact to ensure unimpeded conductive pathways and achieve superior electrochemical performance in solid-state Li–S batteries.