Three-month-old babies suddenly crying need to be alert to colic, intussusception, intestinal torsion and other diseases. 1. colic: three-month-old babies suddenly crying, may be the child due to abdominal cold colic, in addition to sudden crying, often accompanied by nausea, vomiting and other symptoms. The child may also show that he likes to let his parents touch his abdomen. 2. Intussusception: three-month-old babies suddenly cry, but also need to be vigilant about the occurrence of intussusception, intussusception, the child cries, at the same time, there are many symptoms such as vomiting, diarrhea, vomit or even with blood, the discharge of jam-like stools. 3. Intestinal torsion: three-month-old babies suddenly cry, parents should also be alert to the occurrence of intestinal torsion, intestinal torsion, parents can even touch the child’s abdomen in the mass. 3 months old baby suddenly crying may be other reasons, parents can not be taken lightly, need to go to the hospital in time for examination, to clarify the cause of the disease, for targeted treatment.