Children’s diarrhea needs to be treated according to its causes, such as infectious factors, abdominal cold, lactose intolerance, etc. After clear diagnosis, general treatment and medication will be chosen. 1. Infectious factors: unclean diet and other factors can cause bacterial infection, which can cause diarrhea in children for many days. Treatment can follow the doctor’s instructions to use antibiotics, such as metronidazole, amoxicillin, at the same time with montelukast to stop diarrhea, but also with the bifidus triple bacterial tablets to adjust the intestinal micro-ecology. 2. Abdominal cold: children’s abdomen is not a good measure of warmth, due to cold can also lead to diarrhea. Treatment needs to do good warm work, can be warm compresses, if necessary, with montelukast, bifidobacteria tablets, rehydration salts, etc. to improve the symptoms and prevent electrolyte disorders. 3. Lactose intolerance: children’s diarrhea for many days may also be due to lactose intolerance, eating foods containing lactose, can cause diarrhea, parents need to avoid children eating foods containing lactose, while with the montelukast to stop diarrhea. There are many reasons for children to have diarrhea for many days, and it is recommended to go to the hospital in time for standardized treatment after symptoms appear. All of the above drugs should be used under the guidance of a doctor, and should not be used indiscriminately, so as not to lead to adverse consequences.