There are many immune boosting drugs for children, commonly used are splenamine-based oral liquid, or splenamine-based oral lyophilized powder, or you can also use Sophora Qixi Huang granules (also ergin). Children over three years old can also use Pitocin, and carboxymethyl starch sodium, etc. In addition to drugs, children should pay attention to physical exercise and balanced nutritional intake, and should be allowed to play outdoor sports, aerobic activities, early to bed and early to rise, a good habit, and zinc supplementation, which can promote children’s immunity and prevent various infectious diseases. In addition, it is timely vaccination, which is the most effective means to prevent children from various infectious diseases.