The main causes of anal moistening and stool-like discharge in patients are hemorrhoids, anal fistula, proctitis, and colitis. First of all, patients with hemorrhoids will experience increased secretions around the anus. In addition to this, patients with hemorrhoids will experience itching and pain in the anal area and may have bleeding in the stool, especially internal hemorrhoids, which can cause fluid to flow out of the intestines due to poor anal closure. Secondly, patients with anal fistula will have frequent dampness at the anus, have underwear contaminated with fecal water, and often have a history of perianal abscesses, repeated infections from anal fissures, or perineal surgery. Again, this can also occur in patients with colitis, which can be triggered by various bacterial, viral, and parasitic infections, and colitis can lead to involuntary flow of tissue fluid from the intestines with the stool. Finally, proctitis can also lead to wetness in the anal area and the outflow of stool and intestinal tissue, mainly because proctitis patients will have a feeling of anal drop at the onset, and over time, the anal relaxation, which leads to anal outflow of mucus, or even fecal incontinence, and the possibility of malignant tumors such as low-grade rectal cancer and anal canal cancer should also be considered.