1, supplementary nutrition: Green beans contain protein and cellulose, as well as vitamin A, vitamin C, vitamin K and vitamin B needed by human body. Green beans can also provide a small amount of calcium, phosphorus, potassium, iron, zinc, thiamine and riboflavin, which can provide nutrition for human growth and development.

2. Anti-aging: Green beans are rich in protein, folic acid, dietary fiber and various amino acids necessary for human body, especially lysine. It also contains catechin and epicatechin, two flavonoid antioxidants, which can resist the invasion of free radicals and delay the aging of the body.

3. Put the cleaned green beans into the pot, add some water, cook them in cold water, then take them out, add seasonings and mix well, which can supplement vitamins. Blanch the green beans in water, put oil in the pot, stir-fry the green beans after the oil is hot, add a proper amount of seasoning, stir-fry evenly and serve.