The causes of honeycomb ulcers on the back of the feet include tinea pedis, exfoliative keratolysis, cellulitis, eczema, etc. Treatment includes medication and surgery. 1. Tinea pedis: due to fungal infections, these fungi can damage the dermis, leading to the phenomenon of skin ulcers on the back of the feet, at this time, you need to give fluconazole, terbinafine and other medications for antifungal treatment. 2. Exfoliative Keratolysis: because of various factors lead to sweating insufficiency, skin peeling and ulceration, at this time you need to give petroleum jelly ointment for emollient treatment. 3. Cellulitis: because of hemolytic streptococcal infection triggered by subcutaneous tissue damage, resulting in the phenomenon of the back of the foot with honeycomb ulceration, at this time you can give 3% hydrogen peroxide solution flushing anti-anaerobic treatment, while giving antibiotics such as penicillin and other antibacterial treatment. 4. Eczema: for eczema caused by the dorsum of the foot with cellular ulcers, this time you need to give boric acid solution wet compresses, to be dry after the use of glucocorticosteroid ointment, such as mometasone furoate to anti-inflammatory treatment. The appearance of the dorsum of the foot from the phenomenon of cellular ulcers, please consult a doctor, the above drugs please follow the doctor’s instructions.