All three sides of the nail except the free edge meet the skin folds and form a groove called the nail groove. Nail fungus is an infection that occurs in the nail groove area. It is a purulent infection of the soft tissue around the nail, caused by bacteria that invade and multiply under the skin through a tiny break in the skin next to the nail, and is clinically manifested by redness, swelling, pain, inflammatory exudation and granulation. Most nail infections are caused by puncture wounds, abrasions, ingrown nails, or the removal of “inverted pricks” from the nail and nearby tissues. Inferior nail abscesses often occur as a result of the spread of nail infections, or as a result of infection from a stab wound under the nail, or as a secondary infection from a nail hematoma caused by a crush injury at the end of the finger. The main causative organism is Staphylococcus aureus. There is currently a lack of awareness of nail infections. As a result, many people in China have ingrown nails that are mostly treated on their own or repaired in public baths, which can easily cause cross-infection due to their lack of professional skills coupled with irregular medication. This is how the disease becomes a chronic disease. The earlier literature on the treatment of nail infections dates back to the 1960s, and as physicians at all levels continue to learn more about nail infections, new treatment methods are constantly being developed, and currently the more common ones include the following: 1. 4, partial excision of the nail bed plus finger (toe) lateral plications, etc. Although nail fungus is a minor disease in the eyes of many physicians, it is not easy to cure it. The reason for this is simply that clinicians don’t pay enough attention to nail infections and don’t spend enough time and experience researching them, and many physicians don’t pay much attention to their pathogenesis, which often results in treating the symptoms but not the root cause. The only way to cure nail infections and to prevent them from recurring is to remove the nail matrix on the affected side. One of the methods of treatment described above is “partial nail bed methystectomy”. Although this method is effective in treating nail infections, it is very traumatic and may cause the finger (toe) bone to be exposed and take a long time to heal, and the method of suturing the nail bed and nail groove is prone to post-operative infections because the toenail groove harbors dirt. Preventive care 1, usually take care of the skin around the nail, do not make any damage to it, nails should not be cut too short, not to use your hands to pull the “barbs”. 2.Prevention is better than cure. Wooden thorns, bamboo thorns, sewing needles, fish bone thorns, etc. are the easiest foreign objects to pierce the nail groove in daily life, and should be extra careful when participating in labor or busy with household chores. 3, usually pay attention to the maintenance of the finger, after washing hands, before going to bed, rub some Vaseline or skin cream, can enhance the skin around the nail groove resistance to disease. 4, the finger has a small injury, can be coated with 2% iodine, after band-aid bandage to prevent infection. 5, nail gouge early available hot compress, physical therapy, external nail gouge Kang use, if necessary, take sulfonamide or antibiotics. 6, if the pus has been septic should go to the hospital in time to cut, the pus drainage out. Prevent the infection from spreading and causing osteomyelitis of the finger bones. 7. If pus accumulates under the nail, the nail should be removed to facilitate adequate drainage and complete healing.