If a child is fine during the day and starts coughing at night, it is generally considered to be caused by the child’s poor constitution, too much dust in the air, a change in body position or his or her own inflammatory stimulation.1. Physical causes: If the child has a poor constitution and low resistance, then he or she may be more prone to illness. In seasons with a large temperature difference between day and night, when the temperature is low at night, the child is prone to cold, and in order to expel the cold, the child will develop a cough, and as the day As the temperature rises, the cough will ease and stop. It is recommended that a regular and nutritious diet and appropriate exercise be developed to strengthen the child’s resistance, and that attention be paid to keeping the child warm. 2. At this time, attention should be paid to keeping the room clean to avoid the accumulation of dust and thus reduce the occurrence of coughing. 3. Positional reasons: Some children may habitually lie down at night or have their pillows too low or change their position, resulting in poor breathing and coughing. Parents can adjust the child’s sleeping position to side lying or raise the pillow appropriately. If the child feels phlegm, they can pick up the child and pat the back to promote phlegm discharge; 4. Disease causes: If the child suffers from respiratory diseases such as rhinitis, tracheitis or bronchitis, pleurisy, pneumonia, etc. and is affected by inflammatory stimuli, he or she is likely to have a cough at night. In addition, when a child has cough variant asthma, he or she may also have a cough at night, which is usually severe, with recurrent and seasonal characteristics. Some children with tonsillitis, gastroesophageal reflux, allergies, heart disease, or vagal excitement may also develop a nocturnal cough, which may be treated with medication or surgery under medical supervision. In daily life, you can give your child foods to relieve cough and reduce phlegm, such as pears and loquats, and you can also give your child the right amount of warm water to moisten the throat. For children with more serious coughs, please seek medical attention and use medication under the guidance of a doctor. Do not give your child cough medicine without permission, as it may cause excessive inhibition of the cough center, which is not conducive to phlegm excretion.