Inclusion Criteria:  Ovarian cancer first diagnosed and treated; Pathologically confirmed as epithelial ovarian cancer/fallopian tube cancer/primary peritoneal cancer; The stage of the disease is II-IV, and surgery will be performed after evaluation; Age ≥ 18 years old; Subjects and their families fully understand the research plan and sign an informed consent form.  Exclusion Criteria:  Pathologically confirmed as non-epithelial ovarian cancer; Surgical treatment cannot be performed after evaluation; Malignant tumors found in other parts of the study were found within five years before enrollment or at the time of enrollment; Patients who do not agree to use clinical first-line targeted drugs; Severe mental illness; Severe cardiovascular disease, uncontrollable infection, or other uncontrollable comorbid diseases.