Background Introduction Tang screening is an advanced prenatal screening technology used to detect whether the fetus has chromosomal abnormalities. Tang screening results are divided into positive and negative. Positive means that the fetus may have chromosomal abnormalities, and high-risk pregnant women need immediate attention and treatment. After testing positive for Tang screening in terms of diet, high-risk pregnant women need to pay close attention to their eating habits. Pregnant women are advised to increase their intake of eggs rich in