Abstract: Lead-acid batteries, due to their mature manufacturing process and low cost, have long served in transportation, communication power supplies, and energy storage systems, making them one of the most widely used battery systems. However, lead-acid batteries face significant technical bottlenecks, including oxidation corrosion and active material shedding of positive grids, sulfation of negative electrodes, and electrolyte stratification. These failure mechanisms result in a short cycle life, poor low-temperature adaptability, and low energy density, restricting their further application in emerging energy storage systems. High-energy and environmentally friendly solid-state lead batteries, as a critical development direction of green energy storage technologies, have garnered extensive attention from researchers. By replacing traditional sulfuric acid electrolytes with solid-state electrolytes, problems such as easy leakage, electrolyte stratification, and poor cycle stability in conventional lead-acid batteries are effectively addressed. Solid-state lead batteries offer comprehensive advantages such as high safety, long cycle life, high specific capacity, low cost, and recyclability, demonstrating broad application prospects in low-speed electric vehicles, renewable energy storage, emergency power supplies, and military equipment. However, solid-state lead batteries still face challenges such as low ionic conductivity and high internal resistance, which severely hinder their commercialization. Modifications to solid-state electrolytes are necessary to improve the electrochemical performance of solid-state lead batteries, which is of great significance for optimizing energy structures and achieving the strategic goals of "carbon peaking and carbon neutrality".