Primary pneumonia in babies is mostly treated with medication, and the diet should be maintained with adequate intake of fluids and supplementation with vitamins C, A, and D, and vitamin B complex. Calcium supplements should be given at the same time. Pneumonia is a major common disease in children, especially in infants and young children. Infants and young children are commonly infected with viruses, bacteria, or a mixture of viruses, while older children tend to be infected with a mixture of bacteria and atypical pathogens. Antibiotics such as ampicillin, erythromycin, and cefixime or antiviral drugs such as ribavirin and interferon are often used. Diet should be maintained with adequate intake by giving fluids such as human milk, cow’s milk, rice soup, vegetable water, fruit juice, etc. Vitamins C, A, D, and vitamin B complex can be supplemented. Calcium should be supplemented at the same time. For those with a long course of illness, attention should be paid to strengthening nutrition to prevent malnutrition. When the baby has primary pneumonia, it is necessary to consult a doctor in time and carry out standardized treatment under the guidance of the doctor, avoiding unauthorized use of medication and preventing the triggering of adverse consequences.