无瘤操作是外科医护人员在手术中必须遵循的基本原则,无瘤观念与无菌观念同等重要。无瘤操作技术是指在恶性肿瘤的手术操作中为减少或防止癌细胞的脱落、种植和播散而采取的一系列措施[1]。而肿瘤的浸润和转移是恶性肿瘤重要的生物学特性,往往手术操作还会使癌细胞医源性扩散率增加。无瘤操作术可有效减少根治性手术后肿瘤的局部复发和远处转移,从而改善患者的预后,延长患者的无瘤生存期。1临床资料统计我院2005年5月-2013年8月收治的胃癌患者51 Tumor-free operation is a basic principle that surgical staff must follow during surgery, and the concept of tumor-free is as important as the concept of sterility. Tumor-free technique refers to a series of measures taken to reduce or prevent the shedding, planting and spreading of cancer cells in the surgical operation of malignant tumors [1]. The invasion and metastasis of the tumor is an important biological characteristics of malignant tumors, often surgery will increase the iatrogenic proliferation of cancer cells. Tumor-free operation can effectively reduce local recurrence and distant metastasis of tumor after radical surgery, thereby improving patient’s prognosis and prolonging the patient’s tumor-free survival. 1 clinical data statistics in our hospital from May 2005 - August 2013 admitted to patients with gastric cancer 51