The fecal anal swab test is an anal examination for the presence of infectious diseases in the anus. The test is performed on the residual stool of the patient’s anus, and it is a relatively intuitive and accurate way to measure the lesions in the anus. The specific examination method is to expose the patient’s anus and the doctor wears medical gloves and inserts a cotton swab into the anus. The depth does not have to be particularly deep, and the swab is gently wiped to stain the residual stool on the swab, which is then removed and sent for pathological examination while the patient waits for the test results. In summary, anal swabbing of stool is a relatively common test method. If there are abnormal symptoms around the anus, it is best to go to the hospital for the appropriate examination.