Hiking assist robot is a lightweight battery-powered wearable lower limb exoskeleton specially optimized for outdoor hiking, mountain trekking, field patrol and long-distance off-road walking. Integrated with terrain recognition gait sensors and high-efficiency low-noise servo drive system, this hiking assist robot automatically detects flat roads, uphill slopes and downhill sections, and distributes matched auxiliary power to hip and knee joints to greatly reduce leg bearing load, delay muscle soreness and relieve knee joint fatigue during all-day outdoor travel. The ultra-light high-rigidity composite frame adopts IP54 dustproof, waterproof and anti-scratch shell, effectively resisting mud splashes, light rain and road dust to adapt to complex outdoor terrain. Fully adjustable thick soft padded straps fit users with different heights and leg circumferences, equipped with swappable large-capacity lithium batteries to support long-hour continuous hiking assistance. Ergonomic flexible joints will not restrict natural walking, climbing and descending movements, with simple one-button control that outdoor enthusiasts and field workers can operate effortlessly. Built-in overload protection and automatic balance stabilization functions enhance outdoor safety. This durable hiking assist robot realizes smooth human-machine coordination, significantly extending outdoor hiking endurance and improving long-distance walking comfort for backpackers, forest rangers, surveyors and seniors fond of mountain walking.