Also known as black eggs, there is a non-standard name called green eggs. For pregnant women, green shell eggs can effectively improve the symptoms of anorexia, dyspepsia, nausea and vomiting during pregnancy, improve sleep quality, enhance nutrition absorption of pregnant women, rent healthy growth of fetus; for children, it can promote growth, enhance memory, improve IQ, enhance immune function; for middle-aged and old people, it can reduce blood lipid, soften blood vessels, and prolong life.