The duration of diarrhea in children is usually 5 to 7 days. Children’s diarrhea and watery diarrhea are usually viral infections, such as rotavirus, norovirus, etc. The duration of this viral diarrhea is usually 5 to 7 days. Children can be given montelukast to relieve symptoms under the guidance of a doctor, the application of bifidobacterium trichomonas tablets to regulate the intestinal flora, and should also be observed to observe the child’s condition, to observe whether there is a lack of water and electrolyte disorders, and to give rehydration fluids to correct electrolyte disorders in a timely manner, such as oral rehydration salts. Diet should be light, suitable for eating well-digested soft food. Don’t feed the child after him/her, and try to eat less greasy, spicy and indigestible food. If the child has diarrhea and diarrhea, it is recommended to consult the hospital, do not self-medication, so as not to delay the condition.