1. Protein: tea eggs are egg products, which are rich in high-quality protein, which is helpful for the body to develop and maintain the normal function of tissues.

2. Vitamins: Tea eggs are rich in vitamin A, vitamin D and vitamin B, which can help the body maintain normal metabolism, growth and development and immune function.

3. Minerals: Tea eggs are rich in minerals such as calcium, phosphorus and iron, which can help the body and promote bone health and blood circulation.

Overall, although tea eggs are not a staple food, they are nutritious and tasty as a snack or a drink.