A swollen foot infection with pus can be treated by general treatment, medication and surgery. 1. General treatment: pay attention to rest after foot infection, avoid excessive activities. At the same time, the diet should pay attention to strengthen the nutrition, eat more high protein food, eat more vegetables and fruits. Pay attention to protect the affected area dry and clean, avoid wound water. 2. Drug treatment: you can use iodophor disinfectant to disinfect the affected area, but also according to the results of bacterial culture and drug sensitivity test, targeted application of antibiotic treatment, such as cefuroxime, levofloxacin and other drugs. 3. Surgical treatment: If the infection is serious, there is abscess formation, or repeated infection, surgical treatment is needed, such as debridement, incision and drainage. After the foot is infected with pus, you should go to the hospital in time for further diagnosis and treatment, and the above drugs need to be applied under the guidance of a physician.