Provided is a wearable lower limb exoskeleton rehabilitation robot, which comprises a waist-hip joint device, a legs continuous adjusting device, and an ankle joint-foot device, wherein the waist-hipjoint device comprises three degrees of freedom of fore-and-aft flexion and extension, inside-and-outside extension and inside-and-outside rotation, so that flexibility of motions and comfort of wearing are improved, diversity of motion gait is increased, and comprehensiveness of rehabilitation training strategies is improved; the legs continuous adjusting device adopts a positive and negative screw rod continuous adjusting mode, so that a matching accuracy between a human body and the exoskeleton robot and use efficiency of a motor are improved, abrasion of parts of the exoskeleton robot is reduced, and service life of the exoskeleton robot is prolonged; and the ankle joint-foot device reduces impact caused by external force on the ankle joint, and functions of saving labor and automatically resetting are achieved; and a buffer structure of the foot structure can reduce rigid impact force formed by ground reflection, so that the exoskeleton robot body is protected, and the comfort ofa wearer is improved.