The invention provides a novel nursing bed leg separating mechanism. The novel nursing bed leg separating mechanism comprises a bed body (1), and further comprises a first drive cylinder (1-2), a transmission shaft (1-3), a connecting plate (1-4), a first linking rod (1-5), a support (1-6), a sitting cushion (1-7), second linking rods (1-8), a left leg separating plate, a right leg separating plate, a left rotating frame, a right rotating frame, a linkage rod (1-9) and a third linking rod all of which are arranged on the bed body (1). The novel nursing bed leg separating mechanism adopts the first drive cylinder (1-2) as a drive device for driving the sitting cushion (1-7), the left leg separating plate and the right leg separating plate to synchronously move through the transmission shaft (1-3), the first linking rod (1-5) and other components, the cost is reduced, and less space is occupied. Moreover, the novel nursing bed leg separating mechanism further has a leg separating function under the situation that a patient sits up through a steel wire rope device.