How does the child cough repeatedly a few months to do

You should immediately take your child to a regular hospital for blood culture, chest X-ray and other relevant examinations to investigate disease factors; if pneumonia is diagnosed, you should take accurate doses of antibiotics, cough and phlegm and other drugs for treatment according to doctor's advice on time, and regularly take him to see a doctor for reexamination; you should create a good living environment and maintain indoor air circulation at ordinary times.