Swelling and pain next to the nail cap of the finger is considered to be the most likely cause of onychomycosis. The common causative bacteria of inguinitis are Staphylococcus aureus, Streptococcus pyogenes, Pseudomonas, Aspergillus or anaerobes. Clinical manifestations include redness, swelling, heat and pain next to the nail cap, and in severe cases, paronychial abscesses may develop. If the abscess fluctuates, the abscess should be incised and drained, and anti-infective treatment should be given, such as oral cefprozil dispersible tablets, and intravenous antibiotics, such as cefoperazone, can be given if necessary. When there is a painful swelling next to the nail, must pay enough attention to go to the regular hospital as soon as possible, clear diagnosis, and then according to the doctor’s diagnosis to carry out systematic treatment to shorten the course of the disease.