Brown snot-like mucus in the stool may be related to stomach bleeding, colitis, intussusception and other causes. 1. Gastric bleeding: When the stomach bleeds, the blood stays in the gastrointestinal tract for a long time, which may lead to brown snot-like mucus in the stool when it is discharged with the stool. 2. Colitis: mucus is present in the stool itself. When there is inflammation in the intestine, the intestinal mucosa is damaged and edema, congestion and erosion occur. The mucus is discharged with the stool, which is characterized by brown snot-like mucus. 3. Intussusception: mesenteric blood vessels can transport blood to the intestinal wall, and the occurrence of intussusception will affect the blood supply, resulting in intestinal mucosa ischemia, necrosis and detachment. When blood is retained in the intestinal tract for too long, it may lead to brown snot-like mucus in the stool when it is discharged. It is recommended that patients with brown snot-like mucus in the stool go to the hospital in a timely manner to clarify the cause of the disease and standardize the treatment to avoid delaying the condition.