1 first of all, it needs to be clear that preserved eggs, also known as preserved eggs, are a traditional flavor food, and the main raw material is duck eggs. After some special treatment, it became a preserved egg. Generally speaking, many people prefer to eat this kind of food, which will not have much impact on their health, and it is a more fragrant food.

2. Preserved eggs don't have much side effects, but the nutrients are also good. Some supplement vitamins and trace elements, and some supplement protein, fat or folic acid.

3. Generally, the main function of preserved eggs is to be eaten as a vegetable agent or seasoning, not as a staple food. On the downside, there are not many side effects, but if you have some gastrointestinal symptoms after eating it, you'd better not eat it again in the future, because it may stimulate gastrointestinal function to a certain extent after changing its properties, although most people will not have obvious gastrointestinal abnormalities. If you have gastrointestinal symptoms, it is best not to eat, and because the gastrointestinal function of infants is weak, it is best to eat less of this kind of food.