Patients with frothy diarrhea consider the following causes: First, intestinal infections: such as viral enteritis, bacterial dysentery, patients with fast intestinal motility, fecal formation, but more gas production, prone to frothy stools. Second, irritable bowel syndrome: intestinal dysfunction can also cause increased intestinal peristalsis and diarrhea. Third, improper diet: patients eat too much cold, spicy, irritating food, there will be increased exhaustion and defecation. Fourth, chronic pancreatitis: when the exocrine function of the pancreas is lost more than 90%, there will be pancreatic exocrine insufficiency, resulting in the secretion of pancreatic enzymes after meals is difficult to maintain normal food digestion, manifested as wasting, post-meal bloating, loss of appetite, fat digestion and malabsorption, and even steatorrhea, stool discharge more often, feces will have a foul odor, foamy floating on the surface, microscopic examination can see lipid droplets and muscle fibers. If left untreated, it can lead to a decrease in circulating levels of fat-soluble vitamins, rough skin, night blindness, and bleeding tendencies. When changes in stool properties occur, it is important to go to the hospital for relevant examinations and give timely treatment.