High fecal calprotectin, an index with high specificity mainly in the intestinal tract, is mostly used to detect infectious diseases of the intestine and can objectively reflect whether there is inflammation of the intestine. In addition, the value can reflect the severity of intestinal inflammation and is a non-invasive test, which can be used for regular review of infectious diseases or acute inflammation of the intestine to avoid damage caused by traumatic examinations. The specificity of the test is higher for irritable bowel syndrome, ulcerative colitis and Crohn’s disease, and the regular review can be a reference for the healing and recurrence of these diseases. Pay attention to good living and eating habits, eat a diet rich in high dietary and fiber to help the bowel flow, and do not eat spicy and irritating food, so as to avoid the occurrence of intestinal diseases.