Intestinal fungal infections are characterized by increased stool frequency as the main symptom, and in severe cases, they may even lead to the appearance of sepsis. The most common intestinal fungal infections are Candida and Trichophyton, which are more likely to appear in malnourished children and people with chronic intestinal diseases. Patients with Candida infection will have increased stool frequency, accompanied by bloating and low fever as the main symptoms. The nature of the stool will appear bean-like, watery and foamy, and the color of the stool is mainly yellow-green. After infection by Trichoderma, patients will have symptoms of stomach ulcer and infection, so they will show symptoms such as abdominal pain, vomiting blood and black stool. Even some patients will cause peritonitis and intestinal perforation because of Trichoderma infection. The disease of Trichoderma intestinalis infection develops faster and the death rate is higher, so it needs to be controlled in time once it is found.