A protective harness has waistband, a bar connection strip, two frame connection strips. The bar connection strip has a first fixed portion and a bar connection portion opposite to the first fixed portion. The first fixed portion is fixed at the waistband. The frame connection strips is disposed at two sides of the bar connection strip. Each of the frame connection strips has a second fixed portion and a frame connection portion. The second fixed portions are fixed at the waistband. The protective harness is suitable for an assistive walker. The assistive walker has two frames corresponding with each other and a bar. The bar is connected with the frames. The frame connection portions is connected with the frames and the bar connection portion is connected with the bar. A walking aided device has the protective harness and the assistive walker. The protective harness and the walking aided device prevent people with disabilities from falling and secondary injuries.一種防護背帶包括腰帶、橫桿連接帶、兩支架連接帶。橫桿連接帶具有第一固接部及相反於第一固接部的橫桿連接部,第一固接部固定於腰帶。所述支架連接帶分別配置於該橫桿連接帶之兩側,所述支架連接帶各具有第二固接部及支架連接部,第二固接部固定於腰帶。防護背帶適於裝設於助行器,助行器包括兩彼此相對的支架以及連接所述支架的橫連接桿。所述支架連接帶的支架連接部連接所述支架,橫桿連接部連接橫連接桿。一種助行裝置包括防護背帶及助行器。防護背帶及助行裝置可有效避免行動不便者跌倒並預防二度傷害。100‧‧‧防護背帶110‧‧‧腰帶120‧‧‧橫桿連接帶121‧‧‧第一固接部122‧‧‧橫桿連接部130‧‧‧支架連接帶131‧‧‧第二固接部132‧‧‧支架連接部140‧‧‧腰帶連接組件150‧‧‧橫桿連接組件160‧‧‧支架連接組件
