After the 85-year-old man’s big hip fracture surgery, he should consume more food containing high-quality protein, and supplement calcium and vitamins appropriately. 1. High-quality protein food: 85-year-old people who have undergone orthopedic surgery will generally suffer from malnutrition or weakness, and the absorption rate of nutrients will also be significantly reduced. Therefore, supplementing high quality protein after surgery can effectively meet the body’s demand for nutrients and ensure adequate nutrient absorption. Foods rich in high-quality protein include fish, soy products, milk and so on. 2. Calcium: After bone fracture surgery, it is generally recommended to take calcium supplements to promote bone growth and healing. Meanwhile, the 85-year-olds themselves have lower calcium reserves and lower daily intake, so the elderly can take calcium tablets directly to fast intake of calcium. 3. Vitamins: After bone fracture surgery, you should also take more vitamins and eat more fresh vegetables and fruits. After undergoing bone fracture surgery, 85 year olds should choose the right foods to consume properly under the guidance of their doctors.