1、 Biomechanical and mechanobiological researches on orthopedic implantable and interventional material, including 3D printing prosthesis for bone defect repair and artificial joints. 2、 Biomechanical and mechanobiological researches on vascular implantable and interventional material, including small caliber artificial blood vessel and degradation dynamics of biodegradable stent. 3、 Protection system and material research based on woodpecker head impact resistance mechanism 4、 Rehabilitation Engineering including intelligent prosthetics and orthosis design.