Frequent diarrhea after breakfast may be caused by inflammatory bowel disease, acute gastroenteritis, intestinal flora imbalance and other conditions, need to be targeted treatment under the guidance of the doctor, such as prednisone, ciprofloxacin, bifidobacteria and other drug therapy, surgical treatment and so on. 1. Inflammatory bowel disease: frequent diarrhea can occur, salicylazosulfapyridine is effective in controlling mild to moderate active inflammatory bowel disease, and prednisone can be used to control the activity of the disease, and surgical treatment needs to be considered in the event of intestinal perforation or hemorrhage. 2. Acute gastroenteritis: it can be induced after eating unclean food for breakfast. If it is caused by bacterial infection, ciprofloxacin can be used for anti-infection treatment, and montelukast can be used to stop diarrhea if the diarrhea is severe. 3. Intestinal flora imbalance: probiotics can be used, such as Bacillus licheniformis, Bifidobacterium bifidum, etc., and when the diarrhea is severe, loperamide can be used to stop the diarrhea, montelukast. The situation of frequent diarrhea after breakfast is recommended to go to the hospital and ask the doctor to make a judgment.