To determine whether a child’s coughing yellow sputum is almost recovered, we need to analyze the child’s systemic symptoms, not just the color of the sputum. First of all, if the child’s coughing symptoms are significantly reduced, the child starts to cough yellow sputum, the volume of sputum gradually decreases, and the child’s mental state and feeding condition also improve significantly, this is a sign of a fast recovery. Secondly, if the child’s cough turns into yellow sputum, the fever does not subside, the child’s mental state is poor, and the child’s chest X-ray shows a patchy shadow, this indicates that the child’s respiratory tract infection is worsening, which is not a symptom of fast recovery and the child needs to adjust the treatment plan in time.