Constipation is mainly caused by gastrointestinal dysfunction, gastrointestinal dysfunction needs to be regulated with probiotics, the main probiotic that has a regulatory effect on constipation is bifidobacteria. At present, the more commonly used in the clinic is bifidobacterium triplex, bifidobacterium quadruplex, etc. The better effect on diarrhea is Bacillus licheniformis, Bacillus subtilis diphtheriae, these two have a better effect on diarrhea. In addition to taking probiotics, patients with constipation also need to make adjustments in diet and exercise, develop good bowel habits, avoid spicy and stimulating foods in diet, consume more coarse cellulose food, pay attention to more exercise and drink more water to promote the peristaltic function of the gastrointestinal tract.