Device to help paraplegics walk is a medical wearable robotic lower limb exoskeleton specially designed for paraplegic patients, spinal cord injury patients and people with complete loss of lower limb mobility. Equipped with professional bionic gait planning software, all-round safety monitoring sensors and stable high-torque servo actuators, this device to help paraplegics walk provides full active power support for hip, knee and ankle joints, allowing users to safely stand independently, walk forward, turn around and pass gentle slopes during rehabilitation training. Multiple built-in safety protection functions such as anti-fall alarm, overload automatic stop and emergency shutdown can effectively avoid secondary damage to the body during training. The lightweight medical high-strength composite frame reaches IP54 dustproof and waterproof standard, suitable for hospital rehabilitation centers, professional rehabilitation training rooms and home long-term recovery scenarios. Widened soft padded binding belts support full-size adjustment, adapting to patients with different body heights and leg lengths, matched with swappable long-lasting lithium batteries to realize long-time uninterrupted rehabilitation practice. It comes with an easy-to-operate handheld controller and auxiliary standing frame, greatly reducing the operation difficulty of patients and caregivers. This walking assist device promotes blood circulation in lower limbs, effectively improves common complications including muscle atrophy, joint stiffness and pressure sores, helps paraplegic users regain basic walking function, rebuild self-confidence and comprehensively upgrade daily life quality.