Abstract: Numerous studies have been involved in sentinel lymph node mapping in gynecological tumors， such as vulvar cancer， cervical cancer and endometrial cancer. The sentinel lymph node technique can accurate clinical staging of patients in early stage，screen out patients without lymph node metastasis， thus avoid unnecessary extensive surgery， ensuring efficacy while reducing the incidence of complications， and improving the patients’ life quality. In this review， we will focus on recent developments abroad of sentinel lymph node mapping in gynecological malignant tumors.