AI powered lightweight suit is a compact wearable lower limb assistive exoskeleton constructed with high-strength ultra-light aerospace composite materials, driven by intelligent AI gait control system and mini low-energy servo actuators. This AI powered lightweight suit carries ultra-low self-weight to avoid extra physical burden during long-time wearing, and supports quick donning, folding storage and easy carrying for travel and outdoor work. Built-in multi-angle terrain sensors continuously capture real-time gait data, automatically distinguish flat paths, uphill slopes and downhill terrain, then deliver adaptive dynamic auxiliary torque to hip and knee joints to offset body weight and backpack loads. It evenly disperses lower limb pressure, eases persistent muscle soreness and knee joint abrasion, optimizes unbalanced walking posture and maintains smooth natural bionic movement for daily mobility, gait rehabilitation and mountain hiking. The streamlined body meets IP54 dustproof and splash-proof standards to adapt to variable indoor and outdoor environments, equipped with fully adjustable ergonomic soft wrapping straps that fit all heights and leg circumferences without squeezing or friction marks. Matched with small replaceable lithium batteries, it offers all-day uninterrupted power assistance. Bionic flexible joints fully retain natural limb movement range without restricting stepping, climbing and descending motions, with simple one-touch intelligent control easy for seniors with weak legs, postoperative rehabilitation patients and outdoor staff to operate. Integrated anti-fall early warning, overload protection and emergency stop safety modules effectively prevent slips and secondary injuries on uneven ground. This multi-scenario AI powered lightweight suit realizes seamless human-machine coordination, significantly improves long-distance walking comfort and extends continuous movement endurance while retaining remarkable lightweight and portable strengths.