The manifestations of roundworm disease in children include symptoms caused by larvae and adult worms. Symptoms caused by larvae include pneumonia and severe infection, while symptoms caused by adult worms include lack of appetite, abdominal pain and allergy. 1. Symptoms caused by larvae (1) Pneumonia: the larvae migrate to the lungs, which can lead to Ascaris lumbricoides eosinophilic pneumonia or Ascaris lumbricoides pneumonia, which is characterized by bloody sputum, chest tightness and cough. (2) Serious infection: Ascaris lumbricoides can enter the eyes, brain, liver, kidney, etc., causing corresponding symptoms, such as retinitis, convulsions, liver enlargement, liver function abnormality, eye and face edema. 2. Symptoms caused by adult roundworms: there are no obvious symptoms in mild patients. A large number of roundworm infections can lead to heterophagia, polyphagia or lack of appetite. Often abdominal pain, but not intense, some patients are irritable or depressed, grinding teeth. Severe infection can cause malnutrition and affect growth and development. Parents should bring their children to the hospital in time when the above symptoms appear, and standardize the treatment under the guidance of the doctor, so as not to miss the time of treatment.