目的探讨无偿献血采血不足量的影响因素。方法A组为2001-01～2003-12在本院进行无偿献血者;B组为改善采血环境,提高服务质量后,2004-01～06在本院进行无偿献血者;记录两组采血不足量的例数及主要影响因素。结果两组采血量不足者的比例分别为0.95%和0.53%,有显著性差异(P<0.01)。精神状态造成采血不足量的比例B组下降显著(P<0.01);采血不足量者以18～23岁为主,B组比例显著低于A组(P<0.01)。结论年龄、精神状态、献血缺乏知识等严重影响献血者采血量,疏导心理因素、改善采血环境及提高采血技术和服务质量有助于降低采血不足量的发生率。 Objective To explore the influencing factors of insufficiency of unpaid blood donation. Method A was unpaid blood donors in our hospital from January 2001 to December 2003. In group B, to improve the blood collection environment and improve the quality of service, unpaid blood donors in our hospital from January 2004 to June 2006 were recorded. The number of cases and the main influencing factors. Results The proportion of those with insufficient blood volume was 0.95% and 0.53%, respectively, with significant difference (P <0.01). (P <0.01); those with insufficient blood sampling were mostly 18 to 23 years old, while those in group B were significantly lower than those in group A (P <0.01). Conclusions Age, mental status and lack of knowledge of blood donation can seriously affect the amount of blood taken by blood donors, ease psychological factors, improve blood collection environment and improve blood sampling technique and service quality.