Coughing yellow sputum is not a case of quick recovery because coughing yellow sputum is inflammation. The yellow sputum is mainly because the white blood cells in the body contain phagocytes, which go to kill bacteria and cause necrosis of some tissues in the body while killing the bacteria. This will appear yellow. Yellow phlegm appears with the contraction of the bronchial tubes. Yellow phlegm is the process of phagocytosis of foreign substances by white blood cells, and spitting yellow phlegm is considered to be an improvement of the immunity of the body. On the other hand, it is often seen in the case of infection, because the drug resistance is relatively strong nowadays. After spitting yellow sputum, it is considered to be slightly related to the toxicity of bacteria and bacterial infection, which is heavier and the immunity of human white blood cells cannot reach complete elimination, and repeated coughing of yellow sputum will occur. If you start to cough yellow sputum, also consider that there is inflammation this situation, related to human immunity, such as children’s immunity is weaker, coughing yellow sputum considered generally by the bacterial infection situation. If a young person is physically stronger, coughing yellow sputum may be the body’s immunity is in a state of hyperactivity, and it is possible to kill all the bacteria in the body. However, it is recommended to check the blood routine of the baby to rule out that it is caused by secondary viral infections, bacterial infections secondary to viral infections, which are easy to recur clinically and difficult to heal completely, and also easy to cough up yellow sputum. The actual coughing yellow phlegm is generally considered to be inflammatory, so it is advisable to apply anti-infective medication, and it is safer for children to use cefixime III cephalosporin, which can be consulted at the hospital.