The invention provides a postoperative rehabilitation device for patients undergoing abdominal surgery, which includes a bed body, a protective plate is movably inserted into the inside of the rotating plate through an elastic telescopic rod, the outer side of the elastic telescopic rod is fixedly connected with a limiting plate, and the right side of the fixed seat is movable. A handrail is connected, the left side of the handrail is movably plugged with a clamp, the right side of the clamp is rotatably connected with a baffle, the left side of the baffle is slidably connected with a push plate, and the inside of the fixed seat is rotatably connected with a detection plate. When the patient wants to fall due to dizziness when getting up, there will be a sudden impact on the handrail, and the handrail will drive the detection board to rotate rapidly. , the clamping plate is separated from the limiting plate under the pull of the tension spring, and the elastic telescopic rod quickly bounces up to push out the protective plate, and supports the patient's body through the protective plate, which can effectively prevent the patient from falling due to dizziness when getting up The utility model has the advantages of simple structure, safe and convenient use.