Stool is not shaped always dilute most often seen in the irritable bowel syndrome, ulcerative colitis, intestinal flora dysbiosis, usually need to take antidiarrheal drugs, anti-anxiety drugs, aminosalicylic acid preparations, probiotics and other drugs. 1. Irritable bowel syndrome: if there is intestinal flora dysbiosis, probiotics such as Lactobacillus and Bifidobacterium can be taken to regulate intestinal flora, and when combined with emotional anxiety, anti-anxiety medications, such as sertraline and paroxetine, etc. can be taken. 2. Ulcerative colitis: the first choice of drugs is aminosalicylic acid preparations, such as salicylazosulfapyridine, mesalazine, etc., can reduce intestinal inflammation, response to relieve symptoms. In addition, according to the severity of the disease, can use glucocorticoids and other auxiliary treatment. 3. Intestinal flora imbalance: gastrointestinal dysfunction of the population, can take probiotics to regulate the intestinal flora, can alleviate diarrhea due to bacteria and other factors. The old diarrhea is not shaped must be guided by the doctor to use medication, can not be arbitrary use of medication. If the number of times more, need to take antidiarrheal drugs, commonly used drugs is montelukast.