Hairy eggs are immature chickens, which are affected by improper temperature, humidity or some germs during the incubation process, leading to the stop of chicken embryo development and death in the eggshell. But in addition to Escherichia coli, typhoid Bacillus, Staphylococcus, Proteus and Salmonella, there may be parasites and eggs, which can cause gastrointestinal diseases such as abdominal pain, diarrhea, nausea and vomiting. Data show that hairy eggs contain estrogen, progesterone and other physiologically active substances. If children eat it regularly, it will make the hormone level in the body rise abnormally, break the general law of children's growth and development, cause endocrine disorder and cause precocious puberty.