Exoskeleton legs are wearable bionic mechanical devices fitted on the lower limbs, widely used in industrial labor assistance and medical rehabilitation fields. Made of lightweight carbon fiber and aviation aluminum alloy, these devices feature adjustable hip, knee and ankle joints to fit users of different heights and body types without restricting normal limb movements. Industrial exoskeleton legs adopt passive elastic structures, transferring part of the load to the ground during heavy carrying, uphill walking and long-distance patrols, effectively easing pressure on knees and lumbar spines to avoid occupational strain injuries. Medical powered exoskeleton legs are equipped with precision sensors and servo drive systems, which can identify movement intentions in real time to assist patients with hemiplegia, paraplegia and lower limb weakness to complete standing and gait training. Integrated anti-fall balance protection, emergency stop and overload locking functions ensure safe operation during high-intensity work or rehabilitation exercises. Regular use improves lower limb blood circulation and prevents complications like muscle atrophy and joint contracture. As mature intelligent auxiliary equipment, exoskeleton legs effectively protect human joints and help mobility-impaired people regain walking ability and confidence in daily life.