Fungus in routine stool tests has a + meaning that the intestines are infected by fungi. The causes of fungus in the intestines are: dysbiosis of the intestinal flora of the intestinal tract itself, fungus occupies the intestinal tract; the decline of one’s own resistance leads to fungal infections. 1. Intestinal flora imbalance: when patients take too many antibiotics, it will cause the normal bacterial disorders in the intestine, resulting in the loss of intestinal flora protection, at this time, the fungus can occupy a favorable position, resulting in intestinal mucosal damage, causing intestinal fungal infections. 2. Decrease of own resistance: under normal circumstances, it is difficult for fungi to infect the organism. However, when its own resistance declines, such as tumors, severe inflammation, it is difficult for the body to resist the invasive force of fungi, which will lead to fungal infections. When there is a fungus one + in the stool routine, it is recommended to improve the examination in time, and actively cooperate with the treatment under the doctor’s advice.