This article describes a method of treatment of recurrent ovarian cancer that has received high intensity pre-treatment. In particular, the present invention provides a method of treating recurrent ovarian cancer that has undergone high-intensity pre-treatment with a combination of an endostate and an anti-PD-L1 antibody.본원은 고강도 전치료를 받은 재발성 난소암의 치료 방법을 기술한다. 특히, 고강도 전치료를 받은 재발성 난소암을 엔티노스타트와 항-PD-L1 항체의 조합으로 치료하는 방법을 제공한다.