There are several common causes of heavy breath in children: 1, some children have poor digestive tract function, especially accumulation of food can lead to heavy breath; 2, in the clinical Helicobacter pylori infection, can also have heavy breath; 3, should also pay attention to whether the child’s teeth have abnormalities, periodontal lesions, if the child has abnormalities in the mouth, can also have heavy breath. Therefore, for children with heavy breath, it is important to find the cause first, after which you can target the treatment.