Built with high-precision mechanical transmission linkages and ergonomic bionic brackets, this mechanical exoskeleton delivers stable passive and active power assistance to human lower limbs during hiking, climbing and field load-bearing tasks. It follows natural leg movement trajectories accurately to share muscle burden, effectively alleviating long-term waist and knee fatigue caused by prolonged outdoor activities. Constructed from lightweight high-rigidity composite materials, the whole unit features IP54 dustproof and waterproof sealing, enabling consistent performance in hot, cold, muddy and dusty wild terrains. The fully adjustable binding system fits diverse body shapes, paired with swappable lithium batteries to support all-day continuous outdoor operation. Designed for outdoor explorers, field operators and users with insufficient leg strength, this mechanical exoskeleton achieves smooth human-machine coordination and efficiently breaks through the physical limits of long-distance movement.