Normal people generally defecate once a day, individuals defecate 2 to 3 times a day or once every 2 to 3 days, the average weight of daily fecal discharge is 150 to 200g, containing 60 to 75% water, the color of feces is generally yellow-brown, the shape of the cylindrical, foul-smelling stool. If the stool is different from normal in terms of frequency, shape and color, it is called stool abnormalities. Stool abnormalities can be roughly divided into the following types of evidence: 1, damp-heat conjunctive: yellow watery stool or with mucus, fishy odor, intestinal tinnitus, burning pain in the anus, dry mouth and thirst without drinking, red urine, red tongue, yellow greasy coating, smooth pulse. 2, cold dampness in the obstruction: loose stools, abdominal pain, like warmth and pressure, water and grain do not change, do not think about eating, heavy and sleepy limbs, long and clear urine, light tongue, white greasy coating, moist or slow pulse. 3, food stagnation: stool thick, foul-smelling, abdominal pain that diarrhea, diarrhea pain reduction, a short time again painful diarrhea, bloating, belching and swallowing acid, abdominal fullness anorexia, light tongue, moss greasy, pulse string smooth. 4, liver depression and spleen deficiency: abdominal pain before diarrhea, undigested food under the diarrhea, pain does not decrease or increase after diarrhea, triggered by mental stimulation, loss of appetite, belching, light tongue, white fur, string pulse. 5.Spleen qi deficiency: thin stools, aggravated by eating cold, greasy or indigestible food, vague pain in the abdomen, warmth and pressure, loss of appetite, withered face, sleepy limbs, light fat tongue, white fur, sunken weak pulse. 6, Kidney Yang deficiency: abdominal pain and diarrhea before dawn, thin stools, or dry stools, unheated extremities, lumbar soreness, clear and long urine, excessive nocturnal urination, pale fat tongue with teeth marks, sunken and weak pulse. 7, gastrointestinal heat: dry stool, several days, abdominal distension, abdominal pain and refusal to press, red face and body heat, sweating, urinary red, bitter mouth and bad breath, dry tongue, yellow and thick greasy coating, or burnt yellow with mangosteen, sunken and solid pulse. 8, liver spleen stagnation: stools do not pass for several days, thick and heavy embarrassment, can not be stool, depression, belching frequently, chest and epigastric stuffiness, hypochondriac distension, or menstrual breast distension, or the spectrum on the reverse, light tongue, white greasy coating, pulse string. 9, lung and spleen qi deficiency: stool is dry or soft, not pass for several days, sometimes although the intention to stool, but difficult to solve the next, Nou blame not, Nou is sweating and short of breath, fatigue after the stool, lazy and lazy, abdomen is not distended pain, light and tender tongue, thin white moss, weak pulse. 10, blood deficiency and yin deficiency: dry stool is difficult to go down, difficult to discharge, physical wasting, dry throat and less fluid, light white lips and nails, light tongue or red tongue and less fluid, thin pulse or thin count and weakness. 11, internal stasis of toxins: mucus and pus and blood in the stool, increased frequency of stool, urgency and heaviness, irritability and thirst, abdominal distension and pain, dark red tongue with petechiae, thin yellow coating, and string pulse. 12, wind injury intestinal complex: stool with drops of blood, bright red, more or less amount, accompanied by thirst and desire to drink, dry stool, difficult discharge, red tongue, thin white or thin yellow moss, string pulse. 13.Damp heat of liver and gallbladder: grayish white stool resembling clay, yellow skin, bitter mouth, yellow urine, pain in the hypochondrium, light red tongue, yellowish greasy moss, string or string pulse. 14, watery drink: thin stools like water, accompanied by intestinal ringing in the abdomen, with the sound of vibrating water, or thirst without desire to drink, saliva in the mouth, vomiting, light red tongue, slippery moss, smooth pulse. 15.Mixed cold and heat: stool with mucus and pus and blood, unpleasant stool, abdominal pain, warmth and pressure, thirsty without drinking or preferring hot drinks, tiredness and coldness, light yellow urine, red or light red tongue, thin yellow moss, thin and slow or moist pulse.