目前,《国家中长期科学和技术发展规划纲要(2006-2020年)》已将出生缺陷防治列为优先主题,并提出将出生缺陷发生率控制在3‰以下的限制性指标〔1〕。有研究表明,妇女在妊娠前后每天单纯增补0·4mg叶酸可有效降低神经管畸形的发生〔2-4〕。因此,提高妇女叶酸服用率对降低出生缺 At present, the “Outline of National Medium and Long-term Science and Technology Development Plan (2006-2020)” has prioritized the prevention and control of birth defects and proposed a restrictive indicator (1) that will control the incidence of birth defects below 3 ‰. Studies have shown that women in the pregnancy before and after a daily supplement of 0.4 mg folic acid can effectively reduce the incidence of neural tube defects 〔2-4〕. Therefore, to improve women’s folic acid intake to reduce birth defects