There are many clinical causes of cough and diarrhea in children, and they may be caused by the following: 1. Viral infections that cause gastrointestinal colds, which are usually accompanied by fever, sore throat, sneezing and runny nose, in addition to cough and diarrhea. 2. 3. Allergies caused by contact with allergens. Since there are many factors that cause cough and diarrhea in children, it is recommended that parents should not take medication at home without permission so as not to delay the condition by using the wrong medication, but should go to the hospital for relevant examination and treatment in a timely manner.