Pediatric diarrhea is a very common clinical disease, cold, unreasonable dietary reasons can cause children to diarrhea, which is often referred to as diarrhea. To observe the type of diarrhea, if it is yellow dilute watery stool, most of them are functional diarrhea, if the diarrhea with mucus, pus and blood, considered infectious diarrhea, but pediatric diarrhea may come from viral infections are more factors. It is necessary to do stool routine and occult blood test to clarify the specific type. If it is infectious factors, timely use of anti-infective drugs for anti-infective treatment. If it is functional diarrhea, you can use antidiarrheal drugs for treatment, such as Simethicone, also known as Montelukast, has a very good astringent effect, can effectively control pediatric diarrhea. At the same time, pay attention to the appropriate supplemental water, to prevent water loss, to prevent electrolyte disorders, strengthen the accompanying, reasonable diet.