The　modeling　and　simulation　of　transporting　elderly　posture　of　a　new　multifunctional　elderly-assistant　and　walking-assistant　robot(EWR)　considering　the　elderly　falling　angle　are　investigated　in　this　paper,　which　introduced　by　the　authors　lab　to　assist　the　elderly　for　doing　the　daily　activities　Satisfactorily.　The　elder　was　modeled　as　a　double　inverted　pendulum　one　is　the　elder　head　and　second　is　the　elder　body.　The　elder　muscles　are　represented　by　a　rotational　spring　and　rotational　damper　which　used　to　connect　the　double　inverted　pendulum.　Mass-Spring-Damper　system　was　used　for　robot　modeling.　MATLAB　simulation　is　used　to　analyze　the　vibration　characteristics　when　an　outside　disturbance　is　applied　as　input　for　the　wholly　system.　Simulation　results　prove　the　stability　of　the　elderly-robot　system　and　show　the　ability　of　robot　to　prevent　the　elderly　from　falling.　©　2020　IEEE.