Wearable walking aid is a lightweight battery-powered lower limb exoskeleton designed as portable mobility support for seniors with weak legs, postoperative rehabilitation patients, mild hemiplegia crowds and outdoor walkers. Integrated with real-time gait sensing system and quiet adaptive servo drive, this wearable walking aid intelligently perceives standing, flat walking and uphill postures, and delivers soft auxiliary power to hip and knee joints to cut lower limb bearing pressure, ease long-time walking fatigue and stabilize body balance. The ultra-light composite frame adopts IP54 dustproof and waterproof construction, applicable to home corridors, community walkways and gentle outdoor trails. Fully adjustable wide soft padded straps fit users with different heights and leg circumferences, equipped with swappable long-lasting lithium batteries to provide all-day continuous walking assistance. Flexible ergonomic joint design does not hinder natural limb movement, paired with intuitive one-button control for simple operation without complicated learning. This portable wearable walking aid realizes smooth human-machine coordination, effectively reduces joint soreness and muscle strain, greatly improving daily walking comfort and extending long-distance mobility endurance.