It is appropriate to eat one egg a day. Eggs are rich in nutrients and have a high food value. Dietary guidelines for Chinese residents recommend that non-special-period adults eat one egg a day to meet the body’s nutritional needs, and at the same time combine with other foods to ensure that the body’s nutritional diversity. Every 100 eggs contain 144 calories, of which 13.3 grams of protein, 8.8 grams of fat, vitamin E 1.84 milligrams, 56 milligrams of calcium. Moderate consumption of eggs can provide the human body with a variety of nutrients. The protein in eggs is high-quality protein with high absorption rate and high bioavailability, and it also contains eight essential amino acids, making it a high-quality source of protein. Eggs are rich in calcium and high in vitamin A. However, excessive intake of eggs is not recommended, mainly because of the high cholesterol content in egg yolks, especially for patients with hypercholesterolemia and hyperlipidemia, and excessive intake may affect their condition. Excessive intake of eggs can also aggravate the burden on the intestines, liver and kidneys, leading to indigestion and other problems. Eggs can be combined with vegetables, fruits, milk as well as staple foods to increase the source of nutrients and enrich dietary diversity, which is beneficial to health. Those who are allergic to eggs should not consume eggs.