If children always leak from the back waist, this is mainly considered due to the following reasons: first, due to diarrhea caused by the symptoms, after suffering from diarrhea will often lead to thinner stools, this time will lead to stool leakage from the back waist of the stool, which should be timely application of montelukast to children to change the nature of the stool. Secondly, due to the symptoms caused by abdominal cold, in the abdomen after the cold will also cause thin stools or even foam. You can give children timely application of warming and dispersing cold drugs to treat, for example, you can give children the application of patchouli Zhengqi oral liquid.