It is a surgical method that combines cosmetic skin surgery techniques with the production of special frozen tissue sections, where the boundaries and depth of the tumor lesion are determined exclusively by histology. The technique was first created by Dr. Mohs Frederid in the United States in 1941 and was initially fixed with the chemical zinc oxide until 1970 when, with the development of the frozen section technique, fresh tissue was used for immediate histological examination. This method is now used abroad for the treatment of most skin malignancies, especially those of the face and perineum, including squamous carcinomas. Mohs microscopic tracing surgery technique has the following advantages compared with traditional surgical treatment: 1) significantly reduce the recurrence rate of tumor; 2) save the surrounding normal tissues and reduce the size of surgical wound; 3) improve the quality of life; 4) good cosmetic effect. The basic steps of Mohs microscopic tracing surgery l Routine disinfection l Marking the skin tumor area l Excision of skin tumor tissue l Dividing into several portions and marking the location of the excised skin tumor l Frozen tissue section to confirm the presence and location of tumor tissue l If tumor residue is found, repeat the above steps at the corresponding lesion until the tumor is completely removed l Closing the incision to make an appointment with Mohs microscopic tracing surgery our department We accept appointments for Mohs micrographic surgery for patients with skin malignancies all year round, either through my good doctor website or during my clinic hours.