Enterocutaneous fistulas do not cause allergy to protein sweets and there is no correlation between the two. Protein sweet allergy may be caused by the patient’s young age and underdeveloped stomach function, or it may be related to genetic factors. It is recommended that the patient go to the hospital for allergen testing to determine the patient’s food allergens, and try to avoid allergens in the future. Intestinal fistula, also known as rupture of the intestinal wall, may be related to surgery, trauma and other infections, and generally does not cause protein sweets allergy. Patients do not need to worry too much about the protein and sweets allergy caused by fistula. During the period of suffering from intestinal fistula, try not to eat sweets, greasy, spicy and other aspects of food, is not conducive to intestinal absorption and digestion, more detrimental to the recovery of the condition.