Basal cell carcinoma is a malignant tumor of the skin, which is the least malignant among all skin malignant tumors, also called basal cell epithelioma. It rarely metastasizes, but the disadvantage is that it is prone to recurrence if not treated thoroughly and grows very slowly, some basal cell carcinomas do not expand much locally in five or ten years. There are many treatment options for basal cell carcinoma, such as local excision or laser, freezing, topical medicine and local radiation therapy, but the preferred treatment for basal cell carcinoma is surgical excision. However, the preferred treatment for basal cell carcinoma is surgical resection. If there is a condition for surgical resection, it should be as clean as possible, and after resection, it can be appropriately assisted by photodynamic therapy, which is helpful to reduce recurrence. If the basal cell carcinoma grows in some parts and cannot be removed surgically, freezing, laser and photodynamic therapy can be considered, but the disadvantage of these treatments is that they are more likely to recur than surgical removal. Because basal cell carcinoma itself is a tumor that can recur, it should be removed surgically as much as possible as long as it is possible to do so. After resection, the treatment can be supplemented with photodynamic therapy to reduce recurrence.