Abstract: Steel-concrete composite pylon structures are increasingly utilized in long-span bridge construction, with perfobond leiste becoming a common choice for interface connection. Existing research mainly focus on perfobond leiste with tranverse bars, lacking research on perfobond leiste with hooked tie bars. Based on a long-span bridge project perfobond leiste with hooked tie bars. A total of 24 pull-out specimens divided into eight groups were designed to analyze the mechanical behavior and failure modes during the pull-out process. The effects of key design parameters, including steel plate surface treatment, bar diameter, and embedment depth, on failure modes and pull-out performance were examined. The experimental results indicated that: Applying oil to the steel plate surface significantly reduces the bond friction force but does not completely eliminate its effect; Incorporating hooked bars within the hole enhances the load-bearing capacity and stiffness of the specimens but increases the likelihood of brittle failure; Appropriately reducing the bar diameter improves the stress compatibility between the bar and concrete, which enhances the ductility of perfobond leiste; Increasing embedment depth significantly improves both load-bearing capacity and the ductility of perfobond leiste. Based on the experimental results, the contributions of bond friction, concrete dowel shear capacity, and bar shear capacity to the pull-out resistance were quantitatively analyzed. Furthermore, a theoretical pull-out capacity formula tailored for perfobond leiste with hooked tie bars was developed through theoretical derivation and experimental calibration.