If children do not pay attention to hand hygiene after playing, do not wash their hands when eating food or do not wash their hands thoroughly and eat food contaminated with worm eggs, some parasites will enter their bodies and parasitize the human intestine, and the following symptoms will appear: 1. Children often cry out for stomach pain, especially around the umbilicus, and like to rub and press, but when it does not hurt, it is the same as usual; 2. The child is prone to waking up at night, grinding teeth and drooling; 3. On the skin of the child’s face and neck, there are often pale white, nearly round or oval patches with tiny grayish-white scales, commonly known as worm spots; 4. Without obvious reasons, the child’s skin often repeatedly appears hives; 5. chest pain, asthma, elevated body temperature, and increased eosinophilic leukocytes in the blood, etc. 7. Adult worms in the intestine can cause parasitic intestinal obstruction, appendicitis, peritonitis and other comorbidities. Because the eggs are parasitic in the intestines of children, they can absorb the nutrition of the affected children, which can affect their growth and development and lead to malnutrition and anemia, so if you find that your baby has the above conditions, you need to seek medical attention in time. It is important to pay attention to hygiene in order to reduce the chances of developing the disease.