The invention discloses a siRNA sequence for inhibiting survivin gene expression. The siRNA sequence has a broad spectrum siRNA antitumor effect, and has a good inhibitory effect on breast cancer, lung cancer, colon cancer, liver cancer, leukemia, gastric carcinoma, cervical cancer, oral epithelial carcinoma in vitro, and particularly on breast cancer, lung cancer and cervical cancer cells. When entering an organism through a certain manner, the siRNA double strand sequence can efficiently and specially inhibit the expression of related proteins of diseases to silence related disease protein, and can effectively remove the expression of target gene to achieve the purpose of treatment.