Mild bacterial infections of the leg require dressing changes and bandages/medications, serious localized abscesses require surgical excision, etc. Those with severe infections causing systemic symptoms should be hospitalized. 1. Mild cases: these are often caused by trauma, usually only local redness, swelling, heat and pain, some patients have oozing, need daily/every other day dressing change (wound disinfection) bandage, according to the situation can be applied antibacterial drugs or oral antibiotics (second generation of cephalosporin, etc.) treatment. If localized pus or subcutaneous abscess is visible, including normal dressing changes/antibiotic treatment, consider incision/excision of the abscess according to the situation. 2. Severe systemic symptoms: These can be caused by trauma/burns or direct bacterial infections (e.g., salpingitis), and are often complicated by immunocompromised, diabetic, or other diseases. Hospitalization is required for antimicrobial, symptomatic, and fluid support. In summary, bacterial infections of the legs need to be diagnosed and treated according to the cause and severity of the disease to avoid delays.