Reason:

1. The protein content of duck eggs is the same as that of eggs, and the protein in every 500g eggs or duck eggs is almost 45-70g.

2. The fat content of duck eggs exceeds that of eggs. There are about 65 grams of fat in every 500 grams of eggs, and the fat in 500 grams of duck eggs can exceed 70 grams.

3. The total amount of various minerals in duck eggs is much more than that in eggs, especially the iron and calcium urgently needed by human body are rich in duck eggs.

4. Vitamin b2 is an easily deficient vitamin, and there is more 1/5 in duck eggs than in eggs.

Chinese medicine believes that duck eggs are sweet and cool, and have the effect of nourishing yin and nourishing blood. It has a certain therapeutic effect on edema, insomnia due to yin deficiency, etc., and can be used externally to treat sore poison.