The past 5 year heavy metal monitor situation demonstrated that easy to cause the lead pollution main food is the preserved egg, its average content surpasses the national standards to limit the quantity the value 1.2-8.0 times. The lead is one kind of virulent heavy metal, edible surpasses the national standards including the lead quantity the preserved egg, easy to cause lead in human body storing up. the preserved egg takes the good vegetable which in the summer day cool alleviates heat-producing factors together the resident to welcome greatly, but the preserved egg contains the lead, after edible, whether to have the harm to the human body? Is the edible preserved egg only then how safest? the preserved egg may divide into including the lead preserved egg and the non-lead preserved egg. After it is raw material watering mixes, and so on quick-lime, soda ash, tea, table salt, lead monoxide the souse becomes, joins the lead monoxide to be possible to promote the ingredient to be even, permeates in fast the egg, may also cause the preserved egg to coagulate rapidly, easy to peel off the shell. Because the lead harm is big, after excessive takes, sinks to accumulate in vivo lead can destroy the human body nervous system, and so on has the very big damage to the internal organs, many factories change into the lead monoxide the zinc oxide, makes the non-lead preserved egg, edible relatively is safer. the expert indicated that after passing through the souse the preserved egg, the amino acid content is higher than the fresh egg, the fresh taste is better, but a time not suitable edible excessively many, particularly stomach digestion function good, is not suitable every day by edible 1. Preserved egg in souse process, once presents the broken shell, either in the shell has the blister, either the egg itself quality is not good, easy to receive the salmonella bacillus the pollution, regardless of whether to contain the lead, after edible, easy to appear has a fever, symptoms of poisoning and so on abdominal pain diarrhea, disgusting vomit. Processes improper, stores the long time, to have sticks the shell phenomenon, the egg-yolk coagulation, the saline taste overweight preserved egg not to be able completely edible.

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