There are many reasons why the stool is very thin, commonly caused by unclean diet, enteritis, indigestion, gastrointestinal tract dysfunction, etc. 1, unclean diet: due to unclean diet, resulting in E. coli, Salmonella, Shigella and other infections, caused by diarrhea, resulting in unformed stool often diluted. 2, enteritis caused by: due to drug abuse, viral infections, etc. caused by enteritis, will also lead to unformed stool, it is more for 3, digestive disorders caused by: irregular diet, eating too much, eating indigestible food, or due to gastric insufficiency resulting in food retention in the stomach, causing unformed stool, more often, and more into a dilute shape. 4, gastrointestinal dysfunction: due to gastrointestinal dysfunction resulting in unformed stool, dilute, mostly manifested as constipation and diarrhea alternately. There may also be too much dampness in the body, as Chinese medicine says, can also lead to the thinning of the stool. Certain medications, such as power-promoting drugs, proprietary Chinese medicines, etc., the Chinese herbal medicine in the bread of proprietary Chinese medicines sometimes contain ingredients that ease diarrhea. The vast majority of the water in normal stool is absorbed by the large intestine, 99% of it, so the stool is usually formed and streaky.