Stool like phlegm, the most common is intestinal infectious diseases, the specific causes are as follows: 1, dysentery: such as acute bacterial dysentery, amoebic dysentery, if the appearance of stool like phlegm, consider intestinal inflammation so that the intestinal mucosa necrosis, detachment caused by acute inflammation will also appear abdominal pain, diarrhea, fever and other symptoms. Acute bacterial dysentery is mostly mucopurulent stool, amoebic dysentery is mostly jam-like stool, if both repeated diarrhea, will lead to intestinal mucosa necrosis, shedding, appearing like phlegm stool. 2, chronic colitis: there will also be abdominal pain, diarrhea, manifested as pain in the lower left abdomen, can appear mucopurulent stool, repeated diarrhea will also appear after the necrosis of intestinal mucosa, shedding. When the above situation occurs, go to the hospital for detailed examination and give systematic treatment after clarifying the cause.