Preserved eggs have the effects of astringing, purging heat, purging large intestine fire, tonifying deficiency, eliminating diseases, sobering up and stopping dizziness. The prepared preserved egg protein solidified into elastic amber jelly, yolk solidified into solid or soup, and protein decomposed into amino acids. Preserved eggs are indispensable roles in many home-cooked dishes, such as three-color eggs, preserved egg lean porridge, preserved egg tofu and so on. Without them, the taste is simply gone! Some people may stay away from the taste of preserved eggs, but people who like preserved eggs like its unique taste very much.

Some people say: "preserved eggs will be mixed with some lime during processing, which can neutralize excessive gastric acid and relieve stomach discomfort caused by excessive gastric acid secretion." Others say that "preserved eggs contain lead, and if they are eaten for a long time or eaten too much, they will be poisoned!" You'd better not eat it. "Lead mercury poisoning, especially eating too much hurts the stomach! Because preserved eggs are alkaline, you say there is stomach acid in your stomach. Eating too much alkaline food will cause indigestion.

"Lead-free preserved eggs" are not lead-free, but the lead content is much lower after improving the process. The compulsory use of lead-free technology has raised the safety of preserved eggs to a new height. Now the packaged preserved eggs sold in large supermarkets will be marked with "lead-free technology". Eating too much leads to anemia and decreased immunity. Because preserved eggs are mixed with soda ash, lime, salt and lead oxide, eggs are wrapped and pickled, which contain lead, and frequent consumption may lead to lead poisoning. It can lead to insomnia, inattention, anemia and joint pain.

The production of preserved eggs is a "pickling" process. For example, protein can be solidified and denatured by mixing lime, salt, wheat straw and other materials and liquids for a long time, thus forming a unique flavor. At that time, materials were scarce, and it was extravagant to have a preserved egg to eat. Nowadays, people are rich in materials and pay attention to health care. They know that eating preserved eggs will cause anemia, memory decline and immunity decline, and it will also cause children's skeletal and dental dysplasia and mental retardation.