Diabetic foot redness and swelling need to be clarified under the guidance of the doctor, which may be caused by infection, combined gout and other reasons. 1. Infection: diabetic foot suffers from bacterial, fungal and other microbial infections, local inflammatory reaction, may appear foot redness, swelling, heat, pain and other symptoms, need to actively anti-infection treatment. 2. Diabetic foot combined with gout: diabetic foot redness and swelling may also be gouty arthritis, often manifested as unilateral first metatarsophalangeal joints red, swollen and painful, most of them have a history of hyperuricemia, and need to comply with the doctor’s instructions to use colchicine and other drugs to treat. There are many causes of diabetic foot swelling, you should go to the hospital in time, complete the examination, clear the cause of the disease and then give targeted treatment.