Extravasation of body fluids is a clinical manifestation of capillary leakage syndrome. It refers to a group of clinical syndromes such as tissue interstitial edema, hypoproteinemia, hypovolemic shock, acute renal ischemia, etc. due to capillary endothelial cell damage caused by various pathogenic factors and increased vascular permeability resulting in large amounts of plasma protein and water infiltration into the tissue interstitial space. So what should the patients of this disease pay attention to in their diet? Dietary suitability: 1. High protein food is recommended; 2. High vitamin food is recommended; 3. High calorie food is recommended. Dietary contraindications: 1, avoid greasy food; 2, avoid fried food; 3, avoid high salt and high fat food.