Lymphatic metastasis of ovarian cancer is not parallel to whether ovarian cancer is advanced or not, that is to say, sometimes ovarian cancer is advanced, and at this time, it may be realized through lymphatic metastasis or implantation. However, in the early and middle stages of ovarian cancer, the progression of ovarian cancer may also be realized through implantation and lymphatic metastasis. At this time, there is a certain degree of uncertainty in the saying that lymphatic metastasis of ovarian cancer must be advanced, because lymphatic metastasis of ovarian cancer in the early or middle stages of ovarian cancer also constitutes an important pathway, so lymphatic metastasis of ovarian cancer may not constitute a kind of progression of advanced ovarian cancer, but also constitutes a kind of progression of advanced ovarian cancer in the early or middle stages. Therefore, lymphatic metastasis of ovarian cancer does not necessarily constitute a progression of advanced ovarian cancer, but also constitutes an important pathway of its corresponding metastasis in early or middle stage.