Developed exclusively as robotic legs for humans, this bionic lower limb assist device combines multi-joint servo drives and real-time gait detection sensors to deliver smooth, synchronous auxiliary force matching human natural walking, climbing and load-bearing motions. It actively bears lower limb pressure during long-distance hiking, field work and daily rehabilitation training, significantly easing knee and lumbar joint soreness and cutting overall physical fatigue. Crafted with lightweight high-strength composite brackets and IP54 dustproof waterproof sealing, these human robotic legs operate reliably in snowy, high-temperature and muddy outdoor environments. Fully adjustable binding systems fit users of various heights and leg sizes, paired with swappable high-capacity lithium batteries to support all-day continuous activity. Suitable for outdoor enthusiasts, field staff, rehabilitation patients and seniors with weak legs, this set of robotic legs for humans achieves seamless human-machine integration and effectively expands people’s natural movement endurance.