Symptoms of intestinal obstruction appear, due to frequent poor defecation, the accumulation of feces in the colon can form hard fecal stones, or secondary to megacolon, most of which affect growth and development, and can also cause vaginitis or upstream infection. When examining the anus, it is common that the buttocks are flat and round, the gluteal groove becomes shallow, there is no hole or only a trace at the anus, and in the case of low deformity, the finger palpation can touch the swelling of the blind end of the rectum. Fecal stone intestinal obstruction is a kind of mechanical intestinal obstruction caused by intestinal fecal stones, etc. Early diagnosis is difficult. Older patients with frail and bedridden patients with habitual constipation are more likely to suffer from fecal stone obstruction. It is common in two cases: one is defecation dysfunction, stool excretion is not clean, and the stool dries and condenses into fecal stones over time; the other is long-term chronic intestinal obstruction caused by tumors, intestinal adhesions, etc., and fecal stones are formed at the proximal end of the obstruction. The pathogenesis includes: 1, the patient has anterior rectal protrusion, puborectal muscle syndrome, pelvic floor spasm syndrome and other diseases and factors that cause constipation and intestinal stenosis stool can not pass normally; 2, hemorrhoid surgery after defecation sensation is reduced or disappeared, perianal disease conscious inhibition of normal defecation sense; 3, the consumption of persimmon, hawthorn, etc. containing tannic acid easy to cause fecal stones and other indigestible food obstruction of the intestinal cavity; 4, excessive use of diarrhea Sclerotic stool drugs, barium examination without exclusion, formation of hard lumps after drying, etc.