Children sleeping with their mouths open need to be corrected after identifying the cause of the disease, such as general treatment, drug treatment, surgical treatment, etc. The specific analysis is as follows: 1. General treatment: children sleeping with their mouths open may be caused by improper sleeping position or inappropriate pillows, etc., can adjust the sleeping position and choose appropriate pillows to improve the symptoms. 2. Drug treatment: children sleeping with their mouths open may be allergic rhinitis and other nasal diseases, you can use loratadine and other drugs under the guidance of a doctor for anti-allergy treatment, allergy to drugs is prohibited. 3. Surgical treatment: children sleeping with their mouths open may be related to adenoid hypertrophy, turbinate hypertrophy and other factors, it is recommended to go to the hospital for examination, there are surgical indications need to actively cooperate with the doctor to carry out surgical resection treatment. Children sleeping with their mouths open may also be related to other reasons, such as obesity, etc., it is recommended to go to the hospital in a timely manner to conduct relevant examinations to determine the cause of the disease and actively treat the symptoms.