When a toddler vomits bubbles after pneumonia, you can make a general judgment by the cause as well as the clinical manifestations, and the specific diagnosis and treatment should be carried out under the guidance of a doctor. 1. Causes: Under normal circumstances, toddlers spit up bubbles from their mouths mainly due to the fact that after drinking water or milk, the liquid in the mouth can not be completely swallowed, and bubbles are formed with the opening of the mouth. And babies with pneumonia can also appear to spit up bubbles when they have not eaten milk or drunk water. 2. Clinical manifestations: you can observe whether the baby has fever, cough, shortness of breath, choking, poor spirit, appetite loss and other obvious accompanying symptoms, clinical generally through the 1-minute respiratory rate for initial assessment. If the baby obviously breathing faster, it indicates that the lung ventilation function may be impaired, has been increased by increasing the respiratory rate to compensate for the required oxygen. Therefore, if your baby is spitting up bubbles along with the above symptoms, you need to be highly alert to the possibility of pneumonia, and you can seek medical attention in time to improve the blood tests and chest X-ray to assist in the diagnosis. If the toddler is diagnosed with pneumonia, early standardized treatment is recommended to reduce the adverse effects of the disease.