Methods: Aplly the EBN theory to 1,600 cases of our department,put up the chinical practice from the three aspects of vein selection,puncture method and the connecting tube method after puncture.

• 方法对在我科静脉采血的1600例患者应用循证护理原理,从血管选择、穿刺方法、穿刺后接管方法三方面进行临床实践。