We report a interesting case of malignant melanoma associated with squamous cell carcinoma, A 75-year-old woman has been suffered from a 4*3*3cm sized slowly growing protruding mass for 2 years based on the previous existing black or dark brownish colored round plaque on the left buttock since 10 years. A hard fixed lymph node is palpable on the left inguinal area. Biopsy specimens from the plaque and mass revealed typical findings of the superficial spreading malignant rnelanoma and squamous cell carcinoma. Simple mass excision and lymph node dissection were performed.