A labor-saving transmission device of nursing bed comprises a power output shaft for driving the transmission mechanism. The transmission mechanism can respectively drive a first and a second push lift rods, wherein the first push lift rod can drive a back moving rack to have an inclined angle, and the second push lift rod can synchronously drive a leg moving rack to descend. The present invention applies the transmission device formed by the principle of the operation of the lever to the nursing bed, thereby having the labor-saving characteristic and the convenience of operation, providing patient with defecation on the nursing bed directly and achieving the effect of patient's self-care.一種護理床之省力型傳動裝置，包含一動力輸出軸來帶動傳動機構，再由傳動機構分別驅動第一、二推升桿，第一推升桿可以帶動一背部活動架呈一傾斜角度，第二推升桿可以同步帶動一腿部活動架向下沉降；本發明係將槓桿操作原理所構成的傳動裝置使用在護理床上，其具有省力特性及操作上的方便性，進而可供病人直接在病床上進行排便的動作，達到病人自理之功效。
