The present invention relates to an apparatus and method for detecting and analyzing mobility on bed for a monitored person. The apparatus includes a plurality of the dynamometers disposed under a bed, a processing unit for processing signals from the dynamometers, a conversion unit receiving signals transmitted by the processing unit and executing analog-to-digital conversion, and an analyzing unit for computing and integrating signals transimitted from the conversion unit so as to obtain activity kinetic parameters such as a distance, speed and acting force of a tuming-over, and further estimating the mobility on bed of the monitored person as a reference for nursing.本發明涉及一種偵測分析受測者於床上活動力的裝置及方法,該裝置包含複數個可分別設置於一床的測力器、一處理單元,處理來自測力器的訊號,一轉換單元接收該處理單元傳送的訊號並做類比轉數位的轉換,一分析單元,將轉換單元傳送的訊號經計算並做訊號整合以獲得翻身距離、速度與其作用力大小等活動力學參數,進一步評估受測者床上活動力,作為看護的參考。10‧‧‧床上活動力偵測與分析裝置100‧‧‧測力器110‧‧‧處理單元120‧‧‧轉換單元130‧‧‧分析單元140‧‧‧顯示器