Walking assist robot suit is a lightweight wearable lower limb exoskeleton designed for daily walking, uphill hiking, long-distance trekking and light-duty field patrol. Equipped with high-sensitivity gait sensors and high-efficiency servo motors, this walking assist robot suit can real-time capture human movement signals and output adaptive auxiliary torque to hips and knees, effectively dispersing lower limb pressure and reducing muscle fatigue and joint soreness after prolonged walking. The whole frame adopts high-strength lightweight composite material with IP54 dustproof and waterproof performance, adapting to mountain trails, wet woodlands and dusty outdoor working scenes. All binding straps of shoulders, waist and legs are fully adjustable to fit users of different heights and leg sizes, matched with replaceable large-capacity lithium batteries to support all-day continuous walking assistance. With ergonomic structure and flexible movement without restraint, this walking assist robot suit is ideal for outdoor hikers, field workers, the elderly and rehabilitation patients with weak leg strength, greatly improving long-distance mobility comfort and endurance.