The method for the treatment of cancer is provided, use include directly against DNA double-strand breaks repairing protein, such as BRCA2 or RAD51 antisense oligonucleotides or si RNA antisense base therapy. The base therapy of antisense can be used alone, the inhibition synthesized in tandem or with the uncommon Torrs of fish hawk sledge product ǎ Lai Jia Yan NA damages of other bones Min, the DNA inhibition repaired or DNA, such as be radiated, platinum medicine, aminating agent, the inhibitor of tucket inhibitor or thymidylate synthetase.