At present,the number of patients with lower limb dysfunction is increasing,while the technology of lower limb rehabilita-tion robot is also improving.Lower limb dysfunction seriously affects the quality of life of patients,however,the rational use of lower limb re-habilitation robots can effectively improve the symptoms of patients,achieve accurate rehabilitation,and make rehabilitation strategies more optimized.In this paper,the key technology and equipment characteristics of different lower limb robots are described,combined with the research status at home and abroad.The clinical effect of lower limb robot was analyzed in different joints and diseases.Finally,the fu-ture development of lower limb rehabilitation robot is summarized and prospected.