The invention discloses a medical treatment bone surgery rehabilitation nursing auxiliary recovery bed. A stretchable base plate is hinged at the bottom of a head board through a connecting shaft, a stretchable movable plate is installed in a movable sliding groove inside the stretchable base plate, a fixed connecting plate is fixedly installed above the stretchable base plate, a movable sliding groove is formed inside the stretchable movable plate, the movable connecting plate is installed inside the movable sliding groove inside the stretchable movable plate through a movable sliding block,a stretchable spring is installed between the movable connecting plate and the fixed connecting plate, a fixed clamping plate is installed at one side of the head board, the fixed clamping board can be clamped into a hole in the other side of the stretchable base plate, the stretchable base plate is fixed to the head board after being folded, and a lifting back plate mechanism is installed at thefront end of the bed board. The bed has the advantages that the bed is simple in structure, convenient to operate and capable of achieving auxiliary lifting of the back of a patient and auxiliary rehabilitation treatment of leg muscles, usual rehabilitation training of the patient is greatly facilitated, and the bed is suitable for being adopted as a medical auxiliary rehabilitation instrument.