Clinically, it can be manifested as total or partial absence of the sternum, hemilarial absence, window-shaped defect, etc. Sternal fracture is more common. During embryonic development, both sides of the sternal plate fail to complete fusion or only partial fusion, then sternal fracture is formed. 2, can eat more fresh fruits and vegetables to ensure the intake of vitamins. 3.Give liquid or semi-liquid food, such as various kinds of porridge, rice soup, etc. Desirable foods: 1. Foods rich in calcium and phosphorus are desirable; 2. Foods rich in vitamins are desirable; 3. Foods rich in high quality protein are desirable. Avoid eating food: 1, avoid eating fried food: such as sesame, French fries, fries; 2, avoid eating spicy and stimulating food: such as chili, pepper, raw garlic; 3, avoid eating food rich in fat: such as lard, fatty meat, butter.