Honey, it will be destroyed. Judging from the vitamin loss and protein digestibility of egg yolk, if it is not fried to crisp, there is little difference in cooking methods such as steaming, boiling, frying and frying. However, according to the oxidation degree and heating degree of cholesterol, the health ranking of various cooking methods is as follows: A: boiled eggs, B: poached eggs and egg drop soup, C: scrambled eggs and egg pancakes, D: baked yolk. The nutritional preservation rate of boiled eggs is 95%, and boiled eggs are the healthiest and most nutritious.