Early symptoms of intussusception in children include abdominal pain, vomiting, bloody stool, abdominal mass and other systemic symptoms. 1. Abdominal pain: there is often a sudden, severe and regular paroxysmal colic, which can be relieved after a period of time, but will recur. 2. Vomiting: In the early stage, it is reflex vomiting, containing milk lumps and food residues, etc. Later, it may contain bile. Later, it may contain bile, and in the late stage, it may vomit feces-like liquid. 3. Bloody stool: it is a more important symptom, most of the children discharge jam-like mucus and blood in about 6~12 hours after the onset of the disease. 4. Abdominal mass: a sausage-like mass is often detected in the right upper abdomen and other parts of the body, accompanied by slight pressure pain. 5. Others: the general condition of the child is generally good in the early stage, with the development of the disease or complication of peritonitis, etc., there may be severe dehydration and high fever. There may be other symptoms in the early stage of intussusception in children. If you suspect intussusception, we recommend that you consult a doctor in time for diagnosis and treatment under the guidance of the doctor.