I. Colon Transmission Function Test Impermeable Marker Transmission Test This method is used to determine colon transmission time, which is simple, non-invasive, reproducible, does not require high objective conditions, and can be carried out at all levels of hospitals. The test consists of a single oral dose, multiple film method and a split oral dose, single film method. The results of the test can be normal, limited to a segment of the colon delayed, the whole colon delayed three cases. In the normal population, the transmission time of the colon does not exceed 72 h. However, before the test, the patient should be given a high-fiber diet without enemas or laxatives and drugs that may affect intestinal motility. Generally speaking, more than 20% of the marker remains in the body after taking the marker for 120h, which means that there is a delay. Second, scintillation scanning transmission test Tc99 labeled particles can be used to detect the transmission time from the stomach to the small intestine, and In111 can be detected from the ileocecal region to the rectum of the transmission time, the two can be used to understand the whole digestive tract transmission time, can also be understood in a section of the intestinal tube transmission. The disadvantage is that the operation is more complicated, the objective operating conditions are more demanding, and the two elements are radioactive, requiring certain equipment and conditions to carry out. Pelvic floor physiological examination anorectal manometry anorectal resting pressure (the pressure of the internal sphincter usually measured at rest), systolic pressure (the pressure of the external sphincter maximum contraction), anorectal inhibitory reflex (the anal sphincter relaxation when a balloon is placed inside the rectum for dilatation), and rectal compliance test. Elevated anal tube resting pressure often indicates an uncoordinated contraction of the anal sphincter or the presence of anal fissure. Fourth, fecography this examination can observe the resting state and defecation state of the anal canal anatomy, can be found hidden rectal prolapse, rectal protrusion, sigmoid colon bulge, prepubic muscle syndrome.