The locking mouth of Z-shaped steel sheet piles is symmetrically distributed on both sides of the neutral axis, and the web is continuous, which greatly improves the section modulus and bending stiffness, ensuring that the mechanical properties of the section can be fully utilized. Due to its unique cross-sectional shape and reliable Larssen locking. Flexible design with relatively high cross-sectional modulus and mass ratio. Thickening treatment has been carried out on severely corroded areas, resulting in better corrosion resistance.