Excuse me 4 years old child midnight old cough has phlegm is cold cough still hot cough

At present, this situation can not be judged is hot cough or cold cough, you can observe the child's tongue coating color, and expectoration color, texture, etc. If the sputum color is clear, there is foam, thin white coating, that is cold cough. If the sputum color yellow thick, thin yellow coating, that is hot cough. In addition, if frequent night cough, it is best to go to the hospital for examination, do not rule out the possibility of bronchitis, pneumonia.