The paper presents a novel poly(ether-urethane)-based solid-state polymer electrolyte (SPE) with self-healing capabilities, designed to enhance the performance of solid-state lithium-sulfur (Li-S) batteries. The SPE is characterized by dynamic covalent disulfide bonds and hydrogen bonds, which enable excellent interfacial self-healing and maintain good interfacial contact. This design addresses the limitations of traditional solid-state electrolytes, such as low ion conductivity and high interfacial resistance, which hinder the performance of solid-state Li-metal batteries. The integrated SPE is used to construct solid-state Li-S batteries, demonstrating stable long-term cycling (over 6000 hours) and high capacity retention (93% after 700 cycles at 0.3 C) for the Li||Li symmetric cells. Ultrasound imaging reveals that the interfacial contact of the integrated structure is significantly better than that of traditional laminated structures, indicating enhanced interfacial stability. The study provides a promising strategy for designing high-performance solid-state Li-metal batteries by addressing key interfacial challenges.The paper presents a novel poly(ether-urethane)-based solid-state polymer electrolyte (SPE) with self-healing capabilities, designed to enhance the performance of solid-state lithium-sulfur (Li-S) batteries. The SPE is characterized by dynamic covalent disulfide bonds and hydrogen bonds, which enable excellent interfacial self-healing and maintain good interfacial contact. This design addresses the limitations of traditional solid-state electrolytes, such as low ion conductivity and high interfacial resistance, which hinder the performance of solid-state Li-metal batteries. The integrated SPE is used to construct solid-state Li-S batteries, demonstrating stable long-term cycling (over 6000 hours) and high capacity retention (93% after 700 cycles at 0.3 C) for the Li||Li symmetric cells. Ultrasound imaging reveals that the interfacial contact of the integrated structure is significantly better than that of traditional laminated structures, indicating enhanced interfacial stability. The study provides a promising strategy for designing high-performance solid-state Li-metal batteries by addressing key interfacial challenges.