3-year-old children coughing and spitting up milk at night may be caused by upper respiratory tract infection, indigestion and other reasons, can be treated with antibiotics, antiviral, promote digestion and other drugs for the cause of the disease. 1. Upper respiratory tract infection: the child will have a cough, if the cough is heavy, it may stimulate the throat, reflex spit up the milk. If it is clear that the child’s cough is due to a bacterial infection, it can be treated with antibiotics such as cefixime and amoxicillin; if it is caused by a viral infection, it can usually be cured without medication. 2. Indigestion: If the child eats too much milk before bedtime, the food is not digested in time at night, coupled with dry indoor air, may cause the child to cough and spit up the milk. At this time, the child’s diet should be adjusted to reduce eating before bedtime. Note that the above drugs should be used under the guidance of the doctor, to avoid unauthorized use of drugs, so as not to cause adverse effects. 3-year-old children coughing and spitting up milk at night may also have other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, give targeted treatment or treatment.