Cellulitis is a skin disease caused by bacterial infection of deep skin tissue that requires aggressive treatment and generally does not heal on its own. If left untreated, it is likely to worsen inflammation and even cause life-threatening sepsis. Cellulitis is mostly caused by Streptococcus b haemolyticus or Staphylococcus aureus infections. Clinical manifestations are mostly localized redness, swelling, heat, and pain, often accompanied by chills, high fever, malaise, and general malaise. Treatment requires early, adequate and efficient antibiotic systemic therapy to control the spread of inflammation and prevent recurrence. It is recommended to seek medical attention promptly after the onset of the disease and follow medical advice to choose the appropriate antibiotic treatment, if necessary, according to the drug sensitivity test to select antibiotics. At the same time, magnesium sulfate or furacilin solution can be used as a wet compress, and topical antibiotic ointment, such as fusidic acid cream, mupirocin ointment, etc. In addition, physical therapy such as ultraviolet light irradiation, audio electrotherapy, ultra-short wave and infrared light can also be used. For those who form abscesses, they should be promptly incised and drained. Patients with cellulitis should pay attention to rest and avoid overexertion during the fever period. After recovery, appropriate exercise can be done to improve physical fitness. Keep the skin around the lesion clean and dry and do not press on the skin of the lesion. If rupture occurs, use local disinfection such as hydrogen peroxide and iodophor to prevent infection. Choose a diet rich in calories, high in protein and vitamins, such as lean meat, egg and milk, vegetables and fruits, etc. Drink more water every day to promote the inflammation to subside.