Smart walking assistance device is an AI-powered wearable lower limb exoskeleton integrated with real-time gait detection sensors and intelligent adaptive power control system, designed for multi-scenario walking support including elderly daily mobility, postoperative gait rehabilitation, long-distance outdoor hiking and slope traveling. This smart walking assistance device automatically identifies standing, level walking, uphill and downhill motion states, dynamically distributing matched auxiliary torque to hip and knee joints to lower lower limb bearing load, relieve muscle soreness and joint fatigue caused by prolonged movement, and stabilize body balance while standardizing abnormal walking postures. Constructed with ultra-light high-rigidity composite materials, the whole unit reaches IP54 dustproof and splash-proof grade, running steadily in home corridors, community walkways, professional rehabilitation centers and mild mountain trails. Fully adjustable wide soft padded binding straps fit users of all heights and leg circumferences, equipped with swappable long-life lithium batteries to provide all-day uninterrupted walking assistance. Ergonomic flexible joint structure retains full natural limb movement range, paired with simple one-touch intelligent control that seniors, rehabilitation patients and field workers can operate without complicated training. Built-in anti-fall warning, overload protection and emergency stop safety mechanisms effectively prevent secondary injuries during use. This versatile smart walking assistance device delivers seamless human-machine coordination, greatly boosting long-distance walking comfort and extending mobility endurance for people with weak leg strength and mild walking dysfunction.