The reasons for diarrhea after eating are as follows: 1, irritable bowel syndrome, mainly mental problems, stomach pain after eating, the stool will be better after, the stool is often thin stool; 2, acute gastroenteritis, various reasons such as unclean diet, cold and other causes of acute gastroenteritis, when the infection is light, mostly manifested as diarrhea after eating, you can consider the use of antibiotics and probiotics combined treatment; 3 In this case, probiotics are needed to regulate the intestinal flora and improve the intestinal microenvironment. Regardless of the cause of diarrhea, it is recommended to check the stool routine to clarify the presence of bacteria, viruses and other infections, and to actively replenish water, especially light saline, to prevent dehydration caused by diarrhea.