A rotting hole in the nail groove may be caused by local tissue necrosis due to pathogenic bacterial infection, which can be treated with medication or surgery under the guidance of a doctor. Inguguinitis is usually caused by long-term exposure to some kind of irritating substances or pathogenic bacterial infection of the nail groove lesions, if not treated in time, may lead to bacterial invasion of local tissues, resulting in tissue necrosis and abscess breakthrough, thus appearing the phenomenon of rotting a hole. Patients with inguinitis can use chlorhexidine acetate solution, povidone-iodine solution and other antiseptic drugs under the guidance of a doctor to clean up the wound, bandage, and change the medication on a regular basis; for patients who do not have a satisfactory effect of medication or who have recurrent episodes of the disease, surgical methods can be adopted for treatment. Trenchitis patients appear rotten a hole, should go to the hospital in time for examination, and under the guidance of the doctor for treatment, treatment should pay attention to keep the local skin clean, to avoid infection.